下列不属于食品企业建筑设计总平面图卫生审查内容的是（）。

A.依据整体建筑群地理位置与比邻关系，看选址是否符合要求

B.依据各建筑物位置，看其功能分区是否符合要求

C.建筑物结构是否有利于通风、防噪声

D.通过看风向频率图和各建筑物的方位，审查建筑物之间是否存在污染

E.通过看风向频率图和各建筑物的方位，审查建筑物与周围环境间是否存在相互污染

A merchant paid $300 for a shipment of x identical calculators. The merchant used 2 of the calculators as demonstrators and sold each of the others for $5 more than the average (arithmetic mean) cost of the X calculators. If the total revenue from the sale of the calculators was $120 more than the cost of the shipment, how many calculators were in the shipment ？（）

A．24

B．25

C．26

D．28

E．30