Define the union of two events. Choose the correct answer below. A. The union of two events A and B is the event that occurs if both A and B occur on a single performance of an experiment. B. The union of two events A and B is the event that occurs if either A or B (or both) occurs on a single performance of an experiment. C. The union of two events A and B is the event that occurs if only one of A or B occurs on a single performance of an experiment. D. The union of two events A and B is the event that occurs if neither A nor B occurs on a single performance of an experiment.