6.5. Given the following state for the Banker's Algorithm: 6 processes PO through P5 4 resource types: A (15 instances); B (6 instances) C (9 instances); D (10 instances) Snapshot at time TO: Available Current allocation Maximum demand Process A B D A PO 5 5 23 05 22 The first four columns of the 68 matrix comprise the Allocation matrix. The final four columns comprise the Claim matrix. The Need matrix referred to in part (b) is the same as the C-A matrix described in the text. a. Verify that the Available array has been correctly calculated. b. Calculate the Need matrix. c. Show that the current state is safe, that is, show a safe sequence of processes. In addition, to the sequence show how the Available (working array) changes as each process terminates. d. Given the request (3,2,3,3) from Process P5. Should this request be granted? Why or why not