— Would you rather I paid now or later?

— As you like, sir. _____.

A．It’s my pleasure

B．Take your time

C．it’s up to you

D．You’d better do it.

拍卖合同的特殊性表现在（）

A.竞买人始终是要约人，拍卖人始终是承诺人

B.要约是公开的，要约必须到达拍卖人和每一个竞买人

C.要约到达拍卖人和其他竞买人后立即生效，不得撤回

D.新的要约出现后，原要约立即自行失效