Lock Objects Ensure That Shared Data Are in a Consistent

Multiple Choice

lock objects ensure that shared data are in a consistent state when several threads access them.What is a deadlock?

A) When multiple threads try to use the same shared data at the same time, and the threads become undone
B) When multiple threads copy the same shared data in order to proceed, consequently leaving the original lock object useless
C) When multiple threads intertwine multiple times and the lock object is lost, or unreachable
D) When multiple threads are not proceeding because they are currently waiting to acquire the same lock