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Que. Suppose S and Q are two semaphores initialized to 1. P1 and P2 are two processes which are sharing resources.

P1 has statements                 P2 has statements
wait(S) ;                                     wait(Q) ;
wait(Q) ;                                     wait(S) ;
critical section1;                       critical section 2;
signal(S) ;                                 signal(Q) ;
signal(Q) ;                                 signal(S) ;

Their execution may sometimes lead to an undesirable situation called
a. Starvation
b. Race condition
c. Multithreading
d. Deadlock
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