一道高二英语选择题What you said just now did hurt her feelings,____ y

答案：D.
此题考查非限制性定语从句的语法.
1.固定短语make an apology to sb for sth,意思是“为某事向某人道歉”.
2.for which you should make an apology to her
= you should make an apology to her for which
而非限制性定语从句中的关系代词which,代指主句What you said just now did hurt her feelings所表示的情况.

so ，

选项呢？