问题
________ people came to the meeting. ________ the people ______ about 50.
A: number of, The number of, were
B:The number of, A number of, was
C:The number of, The number of, were
D:A number of, the number of, was;
B:The number of, A number of, was
C:The number of, The number of, were
D:A number of, the number of, was;
正确答案是：
