If A is a matrix of order 3 × 5 and B is a matrix of order 5 × 3, then the order of AB and BA will respectively be

If A is a matrix of order 3 × 5 and B is a matrix of order 5 × 3,

1.	If A is a matrix of order 3 × 5 and B is a matrix of order 5 × 3, then the order of AB and BA will respectively be
A.	3 × 3 and 3 × 3
B.	3 × 5 and 5 × 3
C.	3 × 3 and 5 × 5
D.	5 × 3 and 3 × 5
Answer» D. 5 × 3 and 3 × 5