Alternate Approaches Such as Transactional Memory or OpenMP Are Useful

Multiple Choice

Alternate approaches such as transactional memory or OpenMP are useful, because

A) some race condition problems that cannot be solved using synchronization mechanisms such as mutex locks and semaphores can be solved using these alternate approaches.
B) these approaches scale much better than synchronization mechanisms such as mutex locks and semaphores as the number of threads increases.
C) developers do not need to identify race conditions when using these approaches.
D) All of the above.