单选：疏散走道的指示标志应设置在疏散走道及其转角处距地面（）以下的墙面上，走道疏散指示灯的间距不应大于（）。A．1.0m，15.0mB．1.2m，

题目内容：
疏散走道的指示标志应设置在疏散走道及其转角处距地面（）以下的墙面上，走道疏散指示灯的间距不应大于（）。
A．1.0m，15.0m
B．1.2m，20m
C．1.0m，20.0m
D．1.0m，25m
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