The propagation delays of the XOR gate, AND gate, and multiplexer (MUX) in the circuit shown in the figure are 4 ns, 2 ns, and 1 ns, respectively.If all the inputs P, Q, R, S, and T are applied simultaneously and held constant the maximum propagation delay of the circuit is

The propagation delays of the XOR gate, AND gate, and multiplexer (MUX

1.	The propagation delays of the XOR gate, AND gate, and multiplexer (MUX) in the circuit shown in the figure are 4 ns, 2 ns, and 1 ns, respectively.If all the inputs P, Q, R, S, and T are applied simultaneously and held constant the maximum propagation delay of the circuit is
A.	6 ns
B.	7 ns
C.	3 ns
D.	5 ns
Answer» B. 7 ns