问题

_______ the teachers in the school is one hundred, and ________ of them are women teachers.
A: number of; four-fifth
B:The number of; four-fifth
C:A number of; four-fifths
D:The number of; four-fifths;
B:The number of; four-fifth
C:A number of; four-fifths
D:The number of; four-fifths;
正确答案是: