Someone didn't pass his exam and is too upset to do anything, you'd better say to him:   [ ]

A. It's less of a problem to be poor than to be dishonest.

B. Don't let yesterday use up too much of today.

C. Tell me and I'll forget. Show me and I may not remember. Let me try and I'll understand.

D. You can't wake a person who is pretending to be asleep.

一栋四层坡屋顶住宅楼，勒脚以上结构外围水平面积每层为930m²，建筑物顶层全部加以利用，净高超过2.1m的面积为410m²，净高在1.2～2.1m的部位面积为200m²，其余部位净高小于1.2m，该住宅楼的建筑面积为（）m²。

A．3100

B．3300

C．3400

D．3720