The notation below describes two matrices - A and B
A = [ Aij ] where i = 1, 2, 3 and j = 1, 2
B =
111 222 333 444
555 666 777 888
Which of the following statements about A and B are true?
I. Matrix A has 5 elements.
II. The dimension of matrix B is 4 x 2.
III. In matrix B, element B21 is equal to 222.
(A) I only
(B) II only
(C) III only
(D) All of the above
(E) None of the above