单项选择题

A.=COUNTIF(D3:D40,"〈80")-COUNTIF(D3:D40,"〈90")
B.=COUNTIF(D3,D40,"〉=80")-COUNTIF(D3:D40,"〉90")
C.=COUNTIF(D3:D40,"〉=80")-COUNTIF(D3:D40,"〉=90")
D.=COUNTIF(D3:D40,"〉=80")