Excuse me, I have no ______ on me. Can you _____ the note of 100 yuan ?

A．changes, charges

B．changes, change

C．change,change

D．changed, changed

HZT型红外线轴温探测系统环温与背温规定：同一进路探头的背温差值为（），正常情况下背温高于环温。

A.≤±2℃

B.≤±3℃

C.≤±4℃

D.≤±1℃