问题
I don’t know what ________ of students in that school is, but you can see there are _________ of bikes and e-bikes outside the gate.
A:a number, the number
B:a number, a number
C:the number, a number
D:the number, the number
B:a number, a number
C:the number, a number
D:the number, the number
正确答案是：
