Choose the correct alternatives (more than one may be correct) and write the corresponding letters only : At a particular time of computation the value of a counting semaphore is 7. Then 20 P operations and 15 V operations were completed on this semaphore. The resulting values of the semaphore is
- A. 42
- B. 2
- C. 7
- D. 12
Answer: B. 2
Explanation: Final = Initial - P + V = 7 - 20 + 15 = 2.