Repeat Exercise 15.22, instead using flip-flop specification B and a 2 ns clock. 

Data in Exercise 15.22,

Calculate the maximum allowable clock skew in Figure 15.19. Indicate between which pair of flip-flops the skew occurs and whether it will trigger a setup or hold violation. Use flip-flop specification A and a 2 ns clock. You may want to enumerate all possible paths and write the setup and hold equations.

Data in Figure 15.19.