(17
(Choose 1 answer)
A. AB is 2\times2,BA is 3\times3
The sizes of two matrices A and B are 2\times3 and 3\times2 respectively. Find the sizes of the products AB and BA,if they are defined.
B. AB is 3 x 3, BA is 2\times2
C. AB is 2\times2~BA is undefined.
D. AB is undefined, BA is 3\times3
E. None of the other choices is correct
