Choose the correct answer

Choose the correct answer1-Thank you very much.-_____________________.A.That's all right B.Thank you all the same C.Please don't say so D.It's very kind of you2-I think you are a good teacher.-_____________________.A.The same to you B.So am i C.Thangk you D.It's nothing3-What about going swimming in the sea this coming Sunday?-______________________.A.No,I'll be busy this Sunday B.That's a good idea C.Yes,I'd love to D.I think so