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><image 1> While the term "natural enemies" is often used to refer to insects that can decrease the population of pests, what about diseases that affect weeds? How should one handle weeds that have been infected by diseases?
A. Don't know and don't want to guess
B. Leave all the weeds so that the disease can spread to healthy weeds
C. Remove all weeds as they will impact on yield
D. The removal of the weed depends on the potential for the disease to spread to the crop
E. Leave the infected weeds so that the disease could spread

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
C
<image 1> While the term "natural enemies" is often used to refer to insects that can decrease the population of pests, what about diseases that affect weeds? How should one handle weeds that have been infected by diseases?
A. Don't know and don't want to guess
B. Leave all the weeds so that the disease can spread to healthy weeds
C. Remove all weeds as they will impact on yield
D. The removal of the weed depends on the potential for the disease to spread to the crop
E. Leave the infected weeds so that the disease could spread

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