单项选择题

高层建筑的电子游艺厅、网吧应遵守的设计规定为：( )

A.设在地下1层的一个厅室的建筑面积小于60㎡时可设1个出口
B.设在地下2层时，该层地面与室外出入口地坪的高差不应大于10m
C.厅、室之间及与建筑的其他部位之间，并应用耐火极限不低于2.00h的隔墙和1.00h的墙板分隔
D.一个厅室的建筑面积不应超过300㎡

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