The correct option is D d c a a
Clearly, b corresponds to A.
1 corresponds to C and a corresponds to 1. So, a corresponds to C.
2 corresponds to B and d corresponds to 2. So, d corresponds to B.
So, the remaining letter i.e., c corresponds to D.
Thus, BDCC corresponds to d, c, a, a.
Hence, option (D) is the correct answer.