[单选题]
A 10-m uniform beam of weight 1csh--5s:.ztb w6w*pa g;lkfy 0sa;p*: joil y5c; u uz*t**qdd0 N is supported by two ropes at the ends. If a 400-N person sits at 2.0 m from the left end of the beam, what is the tension in ;oiu sl ;**a:pu jd q*z5*cdtythe right rope?
A. $130 \; N$
B. $250 \; N$
C. $370 \; N$
D. $500 \; N$
