联合铜矿山企业外出到甲地收购铁矿石，铁矿石适用( )。

A．矿产品原产地的单位税额
B．本单位应税产品的单位税额
C．矿产品收购地的单位税额
D．税务机关核定的单位税额

— May I take this book out of the reading room?

— No, you _____. You read it here.[ ]

A. mightn't      

B. won't        

C. needn't      

D. mustn't