Dana complained to the produce manager that none of the avocados were ripe. The manager told her that an avocado will ripen quickly if placed in a paper bag with a banana. He also explained that the ripening process can be slowed down by placing the fruit in a refrigerator's crisper drawer. Dana thanked him for the information, and he gave her a coupon for two free avocados. Which of the following does the text say explicitly about the produce manager?

A. He knows a lot about avocados

B. He thanked Dana

C. He likes to help customers

D. He gave Dana a coupon