Which of the following does the text say explicitly about the produce manager?

Use the paragraph to answer the question.
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.
He thanked Dana.
He gave Dana a coupon.
He knows a lot about avocados.
He likes to help customers.