下列关于瞳孔的叙述，恰当的是

A．有机磷农药中毒时瞳孔散大

B．精神兴奋时瞳孔缩小

C．瞳孔的正常直径为2～5mm

D．急性肺水肿时两侧瞳孔可以大小不等

E．昏迷病人瞳孔大，但对光反射灵敏

— I've taken someone else's green sweater by mistake.

— It _____ Harry's. He always wears green.

[      ]

A. has to be

B. will be

C. mustn't be

D. could be