Which of the following statements assigns a random integer between 25 and 60, inclusive, to rn?
a. rn = int(random.uniform(25, 61))
b. rn = int(random.randint(25, 60))
c. rn = int(random.random() * (61 - 25) + 25)
d. rn = int(random.randrange(25, 61))