Q.2. Assume X Y Z W , , , and P are matrices of order 2 , 3 , 2 , 3     n k p n an

Q.2. Assume
X Y Z W , , ,
and
P
are matrices of order
2 , 3 , 2 , 3     n k p n
and
p k , 
respectively. Then the restriction on
n k ,
and
p
so that
PY WY +
will be defined are:
(A)
k p n 3, = =
(B)
k p is arbitrary, 2 =
(C)
p k is arbitrary, 3 =
(D)
k p 2, 3