[单选题]
A lever is 5.0 m lon3f.oj:5gp 9oaxii ex( g. The distalr/1qk08bv; *gii w7 2oa pbannce from the fulcrum to the weight to be lifted is 1.0 m. If a worker pushes on the opposite end with 7wp2*l ai k10aibrnv/qobg;8 400 N, what is the maximum weight that can be lifted?
A. $80 \; N$
B. $100 \; N$
C. $1600 \; N$
D. $2000 \; N$