Consider the interaction between a student and a professor during an office hour session, in which the professor waits for a question from a student and then answers it, while the student waits for the professor, asks a question, and then waits for the answer. Once answered, the student asks another question... and the interaction continues in the same way. Write the code for the student and professor processes to synchronize their interaction during this office hour according to the scheme described above. Your code must use the necessary number of semaphores, where all semaphores are initialized to 0; make sure you use the wait() and signal() operations. Name your semaphores according to what they are guarding. Your code does not need to follow a particular programming language: Use pseudocode instead, like we did in class.