WHICH OF THE FOLLOWING IS TRUE ACCORDING TO THE PASSAGE

Câu 18: Which of the following is TRUE according to the passage?

A. The clerk booted out the outgoing mailbag before snatching the incoming bag.

B. Clerks couldn’t often see what they were doing.

C. The Railway Mail clerk’s job was considered elite because it was safe and exciting.

D. Despite their success, railway mail clerks only handled a small proportion of all non-local mail.