—Excuse me, is this ________ new pencil sharpener?  —Yes, it’s ________. He bought it just now.

A．Tom’s; his

B．Tom; his

C．Tom’s; hers

D．Tom’s; yours

投资者进行一项投资可能接受的最低收益率是()。

A．预期收益率

B．货币时间价值

C．通货膨胀率

D．必要收益率