[单选题]
A 10-m uniform beam of weight 100 7983b.u g/nyjq,dc zk(naenk N is suppordt l54l8 ;ufn ,4uxs4fl awim*ted 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 t*5 l48uxnsal iwt ; ld4mu4f,fhe right rope?
A. $130 \; N$
B. $250 \; N$
C. $370 \; N$
D. $500 \; N$
