Which are the two complementary deadlock-prevention schemes using time

1.	Which are the two complementary deadlock-prevention schemes using time stamps ?
A.	The wait-die & wound-wait scheme
B.	The wait-n-watch scheme
C.	The wound-wait scheme
D.	The wait-wound & wound-wait scheme
Answer» B. The wait-n-watch scheme

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Which are the two complementary deadlock-prevention schemes using time stamps ?

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