A counting semaphore was initialized to $10$. Then $6 P$ (wait) operations and $4V$ (signal) operations were completed on this semaphore. The resulting value of the semaphore is
Answer is option (B)
Initially semaphore is $10$, then $6$ down operations are performed means $(10-6=4)$ and $4$ up operations means $(4+4=8)$
So, at last option (B) $8$ is correct.