How many stalls will we have to add to the pipeline to resolve the hazards in Exercise 2? How many stalls to resolve the hazards in Exercise 3?

a) Adding 2 stalls for Exercise 2 and 3 stalls for Exercise 3.
b) Adding 3 stalls for Exercise 2 and 2 stalls for Exercise 3.
c) Adding 2 stalls for Exercise 2 and 2 stalls for Exercise 3.
d) Adding 3 stalls for Exercise 2 and 3 stalls for Exercise 3.