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>This condition may be seen in association with all of the following except <image 1>
A. Carcinoma of the breast
B. Medullary carcinoma of the thyroid gland
C. Tricholemmomas of the face
D. Macrocephaly

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
This condition may be seen in association with all of the following except <image 1>
A. Carcinoma of the breast
B. Medullary carcinoma of the thyroid gland
C. Tricholemmomas of the face
D. Macrocephaly

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