no here request is same as need and u simply add allocation and u find
current available = total available - current allocation
then we start checking for request or we can say that need ...so here
current allocation ( X,y, Z) = (11,9,9) and total available=(12,12,12)
current available = total available - current allocation => (12-11 , 12-9, 12-9) = (1,3,3)
so here first we execute both P1 or P0 anyone
so we move according to option ---> option A is correct then current available is (4,4,5) so here 2nd time only p0 is exexute so option Band C is wrong and current available update (9.9.13) then any one execute so option A is correct.