Answer the questions about c language

Nhich of the following statements accurately describe the behavior of a lock? More than one ould be true. If the lock is FREE, and several threads attempt to acquire it, then only one thread will be able to acquire it. If the lock is FREE and thread \#1 has called acquire () but the acquire () function has not completed, then it's possible for thread \#2 to call acquire () and set the lock to BUSY before the acquire () call by thread \#1 completes. If two different threads each repeatedly call acquire () and release () in a for-loop, then they will alternate having the lock (first thread \#1 will have the lock; then thread \#2; then thread \#1, etc.). If the initial state of a lock is FREE and a thread successfully calls acquire (), then if that same thread calls acquire () again, the second acquire () will have no effect