The figure below shows a multiplexer where S1 and S0 are the select lines, I0 to I3 are the input data lines, EN is the enable line, and F(P, Q, R) is the output. F is

• A. PQ + Q̅R
• B. P + QR̅
• C. PQ̅R + P̅Q
• D. Q̅ + PR