--I’m sorry, I am too busy to help you, but my brother can.I’ve told him to.--- .
A. It doesn't matter
B. I’m so sorry to hear that
C. That’s very kind of you
D. That’s not fair
网友回答
A. It doesn't matter
B. I’m so sorry to hear that
C. That’s very kind of you
D. That’s not fair
解析：向人表示感谢时，常用it's very kind of you.意思是：你太好了/多谢你。