Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.

[EX Q]: Problem: 1391 x 1391 = ?
Options: a. a. 1951609, b. b. 1951601, c. c. 1951602, d. d. 1951603, e. e. 1934881
[EX A]: e

[EX Q]: Problem: of 30 applicants for a job, 9 had at least 4 years ' experience, 18 had degrees, and 3 had less than 4 years ' experience and did not have a degree. how many of the applicants had at least 4 years ' experience and a degree ?
Options: a. 14, b. 10, c. 9, d. 7, e. 5
[EX A]: b

[EX Q]: Problem: a bag contains 3 blue and 5 white marbles. one by one, marbles are drawn out randomly until only two are left in the bag. what is the probability w that out of the two, one is white and one is blue ?
Options: a. 15 / 56, b. 41 / 56, c. 13 / 28, d. 15 / 28, e. 5 / 14
[EX A]:
d