Question: Assume we have three process $ , B , and C , executing three operations opA, opB, opC respectively. We want to guar - antee

Assume we have three process $, B , and C, executing three
operations opA, opB, opC respectively. We want to guar-
antee that opA is executed before any of opB and opC are
executed. How to achive this using semaphores?
Prosen A
P.B
P.C
S.wait
S.wait
opB
oPC. explain this solution also why signal(2) not somethinng else??
Assume we have three process $ , B , and C ,

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