If the clock reaches the Launch Flop at 2.5ns and the Capture Flop at 2.1ns, this is called _____ skew and it ____ the setup margin.
Answer: D
Explanation: Skew = Tcap - Tlaunch. Here, 2.1 - 2.5 = -0.4ns (Negative Skew). Negative skew reduces the time available for data to travel between flops, thereby degrading the setup margin.
