Which of the following statements is TRUE according to the passage？A. Thin people sit

Which of the following statements is TRUE according to the passage？

A. Thin people sit fewer hours daily than heavy people.

B. People deliver messages to their colleagues in person.

C. More people walk around when they talk on the phone.

D. Heavy people make longer phonecalls than thin people,

请帮忙给出正确答案和分析，谢谢！