Mark the letter A, B, C or D to indicate the correct answer to each of the following question

III. Mark the letter A, B, C or D to indicate the correct answer to each of the following question.
Another feature in northern cuisine is in winter all family members gather around a big hotpot _______ there is a combination of seasoned broth, vegetables and meats.
A. which        B. in which        C. what        D. that
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