Harry is deciding whether to spend all day Saturday studying Herbology. If he studies, he has a 20% probability of earning an A, 60% probability of earning a B, and 20% probability of earning a C. If he does not study, he has a 10% probability of earning an A, a 30% probability of earning a B, and 60% probability of earning a C. He values a free Saturday at $80, an A at $300, a B at $100, and a C at -$70. Create a decision tree to help Harry decide. Label parts of the tree. State what Harry should do and why. His risk tolerance is $50