If A, B and C Are Matrices with Orders 3×3

Multiple Choice

If A, B and C are matrices with orders 3×3, 2×3 and 4×2 respectively, how many of the following matrix calculations are possible?
4B, A + B, 3B^T + C, AB, B^TA, (CB) ^T, CBA

A) 2
B) 4
C) 1
D) 3
E) 0