一重度水肿患者，查体：全身高度水肿，呈凹陷性；腹平坦，移动性的浊音（+）。估计其腹水量大约是（）

A.300～500ml

B.500～1000ml

C.1000～1500ml

D.1500～2000ml

E.2000～2500ml

With their help, we finished the work with _______ people and ______ time.

A．fewer; less

B．less; less

C．less; fewer

D．fewer; fewer