问题
(南京市2008—2009学年度第一学期期末调研测试卷)—Is this the painting ______ you offered $1000 for on the Internet? —Yeah, I will give you 15% discount if you like it.
A:when
B:which
C:as
D:what
B:which
C:as
D:what
正确答案是：
