operating systems

(a) (b) For the resource allocation graph in (a) and (b), which of the following is correct? (1) Both (a) and (b) are completely reducible. (2) Both (a) and (b) are not completely reducible. (3) (a) is completely reducible, (b) is not. (4) (b) is completely reducible, (a) is not. Put your answer in the following blank. Choose from 1,2,3 or 4