An Experiment Has Four Possible Outcomes: A, B, C, and D

Multiple Choice

An experiment has four possible outcomes: A, B, C, and D. Which of the following is a legitimate assignment of probabilities for these four events?

A) 0.3, 0.3, 0.3, 0.3
B) 0.2, 0.4, 0.1, 0.3
C) 0.6, 0.2, 0.3, -0.1
D) 0.2, 0.2, 0.4, 0.4