你是王剛(Wang Gang)，寫一封給朋友李明(Li Ming)的祝賀信，祝賀他獲得復旦大學計算機科學碩士學位，并祝他今后在學習和研究方面取得成功。

What does the underlined word "case" in Paragraph 3 refer to?

• A、Container

• B、Evidence

• C、Problem

• D、Product

What can we learn from the passage?

• A、Apples are better than oranges.

• B、Apples do have some vitamin C to increase the immune system.

• C、Apples can help cure certain diseases.

• D、Apples can provide people with sufficient daily intake of energy.