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【单选题】
下列关于红外线的说法正确的是 ( ) ( )
A.
红外线是一种可见光,能被肉眼看到
B.
红外线能使荧光粉感光,能用来鉴别真伪钞票
C.
一切物体都可以发射红外线,温度较高的物体发射的红外线较多
D.
物体在常温下不会发射红外线,只有温度高到一定程度才发出红外线
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