QUESTION 3 Two concurrent processes, P1 and P2, share two semaphores: S1 and S2. Consider the following pseudocode fragments P1: P2: wait (S1) print ("In P1") print ("In P2") wait (S2) print("Foobar") wait (S1) print ("Hello, world!") signal (S2) signal (s1) Which of the following combined outputs of P1 and P2 is possible? In P2 In P1 After this, both processes deadlock, and there is no further output. In P1 Hello, world! In P2 Foobar In P2 In P1 Hello, world! Foobar In P2 In P1 Foobar Hello, world