单项选择题

设计压力为B级的中压燃气管道,其压力范围是下列哪一项?( )

A.0.2MPa<p≤0.4MPa
B.0.1MPa≤p≤0.2MPa
C.0.01MPa≤p≤0.2MPa
D.0.2MPa<p≤0.5MPa