—Excuse me. Could you tell me _______?

—Yes, There is a video shop next to the tall building. [ ]

A. where can I buy some CDs

B. where I can buy some CDs

C. when can I buy some CDs

D. when I can buy some CDs

A：条件(1)充分，但条件(2)不充分．
B：条件(2)充分，但条件(1)不充分．
C：条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．
D：条件(1)充分，条件(2)也充分．
E：条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．

多项式f(x)除以x+2所得余式为1．
(1)多项式f(x)除以x²-x-6所得余式为2x+5；
(2)多项式f(x)除以x³+2x²-x-2所得余式为x²+x+1．