If X, Y, Z, W & P are matrices of order 2 × n, 3 × k, 2 × p, n × 3 and p × k respectively. The restrictions on n, k & p so that PY + WY be defined are:

k = 3, p = n k is arbitrary, p = 2 p is arbitrary, k = 3 k = 2, p = 3

k = 3, p = n

The correct answer is Option (1) → k = 3, p = n