單項(xiàng)選擇題建筑基坑工程中主柱的豎向位移的監(jiān)測(cè)點(diǎn)不應(yīng)少于主柱總根數(shù)的(),且不應(yīng)少于3根。()

A.3%
B.5%
C.6%
D.10%