If function W, X, Y and Z are as followsW = R + P Q + R S X = PQ R S + P Q R S + P Q R S Y = RS + PR + P Q + P QZ = R + S + PQ + P Q R + P Q S Then

• A. W = Z, X =
• B. W = Z, X = Y
• C. W = Y
• D. W = Y =