Directed Graphs and Network Flows · Medium problem

A flow network has arcs $s\to a$ (capacity $5$), $s\to c$ (capacity $3$), $a\to b$ (capacity $4$), $c\to b$ (capacity $2$), $b\to t$ (capacity $6$), $c\to t$ (capacity $4$), and $b\to a$ (capacity $2$). For the cut $S=\{s,a,c\}$, $T=\{b,t\}$, what is $\operatorname{cap}(S,T)$?