In the design protocol of the critical section problem, each process must ask permission to enter the critical section in …… code; it then executes in the critical section; once it finishes executing in the critical section it enters the …… code. The process then enters the …… code.

1. A(A) entry section, remainder section, exit section
2. B(B) entry section, exit section, remainder section
3. C(C) remainder section, entry section, exit section
4. D(D) remainder section, exit section, entry section

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