單項選擇題通行地溝與半通行地溝的凈高與通道寬度尺寸分別應不小于()m。

A.2.0,1.0;1.6,0.7~1
B.1.9,0.9;1.5,0.6~0.9
C.1.7,0.8;1.3,0.5~0.6
D.1.8,0.7;1.4,0.5~0.7