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>A simply supported beam is subjected to a linearly varying distributed load $q(x)=\frac{x}{L}q_{0}$ with maximum intensity q0 at B. The beam has a length L = 4 m and rectangular cross section with a width of 200 mm and height of 300 mm. Determine the maximum permissible value for the maximum intensity, q0, if the allowable normal stresses in tension and compression are 120 MPa.<image 1>
A. $q_{0}=250.7403\frac{kN}{m}$
B. $q_{0}=350.7403\frac{kN}{m}$
C. $q_{0}=450.7403\frac{kN}{m}$

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
B
A simply supported beam is subjected to a linearly varying distributed load $q(x)=\frac{x}{L}q_{0}$ with maximum intensity q0 at B. The beam has a length L = 4 m and rectangular cross section with a width of 200 mm and height of 300 mm. Determine the maximum permissible value for the maximum intensity, q0, if the allowable normal stresses in tension and compression are 120 MPa.<image 1>
A. $q_{0}=250.7403\frac{kN}{m}$
B. $q_{0}=350.7403\frac{kN}{m}$
C. $q_{0}=450.7403\frac{kN}{m}$

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