Speaker A: I sent a package to Dallas two days ago and it still hasn t arrived. My trackin

Speaker A: I sent a package to Dallas two days ago and it still hasn t arrived. My tracking number is 641-24. Speaker B: Ok, Mr. Smith.______but our delivery person said that there was no such address.

A．Don"t be angry,

B．Stay calm,

C．Thanks for asking me,

D．We attempted to deliver it,

请帮忙给出正确答案和分析，谢谢！