【单选题】

Questions 15 to 17 are based on the following passage.At the end of the passage, you will be given 15 seconds to answer the questions. Now, listen to the passage.

What happens to a bill if it is killed by the president by pocket vetoA．The bill becomes law immediately.
B．The bill can’t become law unless the whole process begins again.
C．Lawmakers must review the bill within ten days.
D．The President must sign the bill if it’s passed again.