24. Each of the following code fragments contains a bug in the entry or exit section. For each fragment, state whether mutual exclusion still holds. If it doesn’t, show an execution sequence that violates it. State whether deadlock can occur. If it can, show an execution sequence that produces it.

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*(a) Process P1 Process P2 do do wait(mutEx); signal(mutEx); critical section signal(mutEx); remainder section critical section wait(mutEx); remainder section while (!done1); while (!done2); (b) Process Pl Process P2 do do signal(mutEx); signal(mutEx); critical section wait(mutEx); remainder section while (!done 1); critical section wait(mutEx); remainder section while (!done2);