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 computer program for multiple regression has been used to fit $ \widehat $ $ y_ {i} $ = $ b_ {0} $ + $ b_ {1} $ $ \cdot $ $ X_ {1j} $ + $ b_ {2} $ $ \cdot $ $ X_ {2j} $ + $ b_ {3} $ $ \cdot $ $ X_ {3j} $ Part of the computer output includes: <image 1> Calculation of confidence interval for  b2  consists of _______$\pm $ (a student's t value) (_______)
A. -.62,.22
B. -.62,.32
C. -.72,.22
D. -.72,.32

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
D
A computer program for multiple regression has been used to fit $ \widehat $ $ y_ {i} $ = $ b_ {0} $ + $ b_ {1} $ $ \cdot $ $ X_ {1j} $ + $ b_ {2} $ $ \cdot $ $ X_ {2j} $ + $ b_ {3} $ $ \cdot $ $ X_ {3j} $ Part of the computer output includes: <image 1> Calculation of confidence interval for  b2  consists of _______$\pm $ (a student's t value) (_______)
A. -.62,.22
B. -.62,.32
C. -.72,.22
D. -.72,.32

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