[单选题]
A 36-kg round table is suppod - 2bo;f xl;y it4v+xazj3hx:rted by th7 ,f3,(v fs/p azb -ln6knvhberee legs placed equal distances apart on the edge. vhn f,(bza pe,v klsbf67n3-/What minimum mass, placed in the middle between two supports on the table's edge, will cause the table to overturn?
A. $12 \; kg$
B. $24 \; kg$
C. $36 \; kg$
D. $48 \; kg$
