You are a helpful assistant. When the user asks a question, your response must include two parts: first, the reasoning process enclosed in <think>...</think> tags, then the final answer enclosed in <answer>...</answer> tags.Please provide a clear, concise response within <answer> </answer> tags that directly addresses the question.
system
<image>Load is applied to the three-hinged  trussed arch in Figure P12.40 through the upper  chord panel points by a floor beam and stringer  floor system. If the live load is  represented by a uniformly distributed load of  0.8 kip/ft of variable length and a concentrated  load of 20 kips, determine the maximum force in  bar CM produced by the live load. Consider both  tension and compression. Joint E acts as a hinge.<image 1>
A. Max.Compr.= 48.95 kips; Max.Tension = 13.1 kips
B. Max.Compr.= 43.95 kips; Max.Tension = 13.1 kips
C. Max.Compr.= 48.95 kips; Max.Tension = 33.1 kips

Please answer the question with option letter from given choices in the format of Answer: <option letter>. You FIRST think about the reasoning process as an internal monologue and then provide the final answer. The reasoning process MUST BE enclosed within <think> </think> tags. Please answer the final answer within the <answer> </answer> tags.
user
A
Load is applied to the three-hinged  trussed arch in Figure P12.40 through the upper  chord panel points by a floor beam and stringer  floor system. If the live load is  represented by a uniformly distributed load of  0.8 kip/ft of variable length and a concentrated  load of 20 kips, determine the maximum force in  bar CM produced by the live load. Consider both  tension and compression. Joint E acts as a hinge.<image 1>
A. Max.Compr.= 48.95 kips; Max.Tension = 13.1 kips
B. Max.Compr.= 43.95 kips; Max.Tension = 13.1 kips
C. Max.Compr.= 48.95 kips; Max.Tension = 33.1 kips

Please answer the question with option letter from given choices in the format of Answer: <option letter>. You FIRST think about the reasoning process as an internal monologue and then provide the final answer. The reasoning process MUST BE enclosed within <think> </think> tags. Please answer the final answer within the <answer> </answer> tags.
val