59% of all violent felons in the prison system are repeat offenders. If 45 violent felons are randomly selected, find the probability that

a. Exactly 27 of them are repeat offenders.

b. At most 28 of them are repeat offenders.

c. At least 27 of them are repeat offenders.

d. Between 26 and 34 (including 26 and 34) of them are repeat offenders.