A bag contains 3 white, 6 red, 5 blue identical balls. A ball is picked at random from the bag. What is the probability that is either white or blue?

A. 9/14
B. 4/7
C. 3/7
D. 5/14
E. 3/14

Correct Answer: Option B

B. 4/7

Explanation
P(W or B) = 3/14 + 5/14 = 4/7