Which of the following sentences is corret

问题描述:

Which of the following sentences is corret
A.What do you say that the population of Shanghai is
B.How many people do you think does Shanghai have
C.What do you believe the population of Shanghai is
D.What do you tell is the population of Shanghai
哪句正确?

c
问人口,用population,用what提问,do you think是插入语