单选题下列三层普通砌体结构房屋示意图中，层高设计正确的是（　　）。<br/> ?A．<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/18930790_0.jpg"><br/> ?B．<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/18930790_0_1.jpg"><br/> ?C．<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/18930790_0_2.jpg"><br/> ?D．<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/18930790_0_3.jpg">