单选题 某50m²的教室，当装饰装修工程竣工后，应在房间设( )个室内环境污染物浓度检测点，检测点应距内墙面不小于( )，距楼地面高度( )。

• A．1,0.5m,0.5～1.Om
• B．1,0.5m,0.8～1.5m
• C．2,0.5m,0.5～1.Om
• D．2,1m,0.8～1.5m