[单选题]
A 36-kg round table is supportedg;-vx6f 2zpqttkd*f ty4*r 7a by threex1yr d4/ald g/ legs placed equal distances apart on the edge. What minimum mass, placed in the middle between two supports on the tablxrd da4ly 1/g/e's edge, will cause the table to overturn?
A. $12 \; kg$
B. $24 \; kg$
C. $36 \; kg$
D. $48 \; kg$
