[单选题]
A uniform board of weight*/fn:tbk z6yvx. piq8 40 N supportg;3p2q2+f1nelehlfquj r b13 s two children weighing 500 N and 350 N, respectively. If the support is at the center ob l 2;unf r+e2q3p11qhl3egj ff 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. $2.7 \; m$