Employees at an office were surveyed about what types of hot beverages they drank that day. It was found that 50% of them drank coffee and 25% drank tea. The survey showed that 10% of the employees drank both coffee and tea. For these employees, are the events "drank coffee" and "drank tea" mutually exclusive? Choose 1 answer: A Yes B No Find the probability that a randomly selected person from this group drank coffee OR drank tea. P (coffee OR tea) = =