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>Adam and Arin Adams have collected their personal asset and liability information and have asked you to put together a balance sheet as of December 31, 2015. The following information is received from the Adams family. <image 1> What was their net working capital (NWC) for the year? (Hint: NWC is the difference between total liquid assets and total current liabilities.)
A. $2,100
B. $3,100
C. $4,100
D. $5,100

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
Adam and Arin Adams have collected their personal asset and liability information and have asked you to put together a balance sheet as of December 31, 2015. The following information is received from the Adams family. <image 1> What was their net working capital (NWC) for the year? (Hint: NWC is the difference between total liquid assets and total current liabilities.)
A. $2,100
B. $3,100
C. $4,100
D. $5,100

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