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Ans. (1)
Explanation: There are following ways that concurrent processes can follow.
C = B – 1; // C = 1
B = 2*C; // B = 2
D = 2 * B; // D = 4
B = D – 1; // B = 3
C = B – 1; // C = 1
D = 2 * B; // D = 4
B = D – 1; // B = 3
B = 2*C; // B = 2
C = B – 1; // C = 1
D = 2 * B; // D = 4
B = 2*C; // B = 2
B = D – 1; // B = 3
D = 2 * B; // D = 4
C = B – 1; // C = 1
B = 2*C; // B = 2
B = D – 1; // B = 3
D = 2 * B; // D = 4
B = D – 1; // B = 3
C = B – 1; // C = 2
B = 2*C; // B = 4
There are 3 different possible values of B: 2, 3 and 4.
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