Sarah has t tea bags. Her mom has 39 tea bags and her sister has 22 tea bags. They have 87 tea bags in all. How many tea bags does Sarah have? A. t - 39 - 22 = 87 B. t - 39 + 22 = 87 C. t + 39 - 22 = 87 D. t + 39 + 22 = 87