A. The tryLock () method returns a boolean indicator immediately regardless if it has or has not managed to acquire the lock.

B. The tryLock () method returns a boolean indicator immediately if it has managed to acquire the lock, otherwise it waits for the lock acquisition.

C. The lock () method returns a boolean indicator immediately if it has managed to acquire the lock, otherwise it waits for the lock acquisition.

D. The Lock () method returns a boolean indicator immediately regardless if it has or has not managed to acquire the lock