—Thank you very much for everything. You’ve been so helpful.

—_____. Just let me know if there’s anything else I can do for you.[ ]

A. With pleasure      

B. No, thanks    

C. Please don’t say so      

D. My pleasure

对长度为N的线性表进行顺序查找，在最坏情况下所需要的比较次数为______。

A．N+1

B．N

C．(N+1)/2

D．N/2