$77=7\times 11$  $364=2\times 2\times 7\times 13$  Because $B$ is the factor both number contains, $B=7$  Thus, $A=11$, $C=52$. 
There are three whole number $A$, $B$, $C$. $A\times B=77$, $B\times C=364$. $A+B+C=$~\uline{~~~~~~~~~~}~. 
(A) $$30$$ 
(B) $$50$$ 
(C) $$70$$ 
(D) $$90$$ 