`A , B`
are two matrices such
that `A B`
and `A+B`
are both defined; show
that `A , B`
are square matrices of
the same order.
A. the order of A and B are not same necessarily,
B. No. of columns in `A=No.` of rows in B.
C. A and B are square matrices of same order.
D. No. of rows in A=No. Of columns in B.