State whether each of the following is true or false. If false, explain why.

a) Timed waiting threads return to the runnable state only when the time interval expires.

b) With synchronized, there is no way to state the condition on which threads are waiting.

c) Using ReentrantLock with a fairness policy won’t allow starvation to occur.

d) When several threads call method lock on the same object at the same time, only one of them can obtain the lock, the other threads are placed in the waiting state for that lock.