The bus system of a machine has the following propagation delay times 40 ns for the signals to propagate through the multiplexers, 90ns to perform the ADD operating in the ALU, 30ns delay in the destination decoder, and 20ns to store the data into the destination register. What is the minimum cycle time that can be used for the clock?

The bus system of a machine has the following propagation delay times

1.	The bus system of a machine has the following propagation delay times 40 ns for the signals to propagate through the multiplexers, 90ns to perform the ADD operating in the ALU, 30ns delay in the destination decoder, and 20ns to store the data into the destination register. What is the minimum cycle time that can be used for the clock?
A.	120ns
B.	150ns
C.	960ns
D.	180ns
Answer» C. 960ns