Consider the following snapshot of a system: Allocation B 1 Process A 0 PO P1 P2 P3 1 3 1 1 1 1 C 1 3 0 2 D 0 1 4 4 Max A 3 2 5 2 B 4 3 3 5 C 1 3 1 2 D 1 3 7 6 Using the banker's algorithm, determine whether or not each of the following states is unsafe. If the state is safe, illustrate the order in which the processes may complete. Otherwise, illustrate why the state is unsafe, and identify the processes that causes the system to be unsafe. (a) Available=(2, 1, 1, 1) (b) Available=(2, 2, 1, 2)