—Don’t forget to phone me when you get to New York.Just let me know you’ve arrived safely.

—I won’t forget.Goodbye then.

—________.[      ]

A. With pleasure  

B. Have a nice trip

C. Don’t mention it  

D. It’s very nice of you

筛分法泥沙颗粒级配分析成果误差检验，要求各粒径级（）某粒径沙量百分数的偏差应小于4。

A.小于

B.大于

C.等于

D.不等于