[单选题]
A 10-m uniform beam of wp22 uii2eg pk:eig3+lkje-. dk cuht 100 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 bel+d3- ujk .ckeam, what is the tension in the right rope?
A. $130 \; N$
B. $250 \; N$
C. $370 \; N$
D. $500 \; N$
