[单选题]
A lever is 5.0 m long. vq(c i77 txjewc)0 jb3j k9mh(The d78ng lugs x oj(/-e6iam;kh,jistance from the fulcrum to the weight to be lifted is 1.0 m. If a worker pushes on the opposite end with 400 N, what is the maximum weight that can be lin;/,ma68u7-jxjislgoeh k g(fted?
A. $80 \; N$
B. $100 \; N$
C. $1600 \; N$
D. $2000 \; N$
