Speaker A: The box looks very heavy. Would you like me to carry it for you? Speaker B: ______
A.
No, no. Thank you. The box is not very heavy and I can carry it myself.
B.
Thank you for your help. This box is really very heavy.
C.
Thank you, thank you. I'm glad that you can help me.
D.
Oh, no. I can manage. Thanks anyway.