8. Executing the flowchart on the right, if the input is $a = - 1$, then the output $S =$ A. $2$ B. $3$ C. $4$ D. $5$ [Figure]
8. Executing the flowchart on the right, if the input is $a = - 1$, then the output $S =$\\
A. $2$\\
B. $3$\\
C. $4$\\
D. $5$\\
\includegraphics[max width=\textwidth, alt={}, center]{cd808fdb-5cf6-4ceb-9628-959ae73784cb-2_739_681_240_1403}