[单选题]
A uniform board of weight 4(q q+ xc+-1nszn6w gun0 N supporaaeeoa 2--+hdts two children weighing 500 N and 350 N, redo+ ah -2aeea-spectively. If the support is at the center of the board and the 500-N child is 1.5 m from the center, what is the position of the 350-N child?
A. $1.1 \; m$
B. $1.5 \; m$
C. $2.1 \; m$
D. $2.7 \; m$
