4. A utility program performs the following operations: copy a file from tape to disk and print the file on printer. The figure shows resource allocation graph for Processes A and B, and Resources Tape, Disk, and Printer a. Is there a potential deadlock? Yes or No. Please explain. (2 points) Tape b. Using the symbols in the form of P->R and R->P ist ll of the resource allocations and requests shown in the figure. Hint: there are six. (2 points)