Queued Spin Lock Are More Advantageous Than a Normal Spin

Multiple Choice

Queued spin lock are more advantageous than a normal spin lock because ________.

A) queued spin locks enforce a FIFO ordering of requests, which increases fairness.
B) queued spin locks execute more efficiently than normal spin locks.
C) queued spin locks execute more efficiently than normal spin locks and they enforce a FIFO ordering of requests, which increases fairness.
D) queued spin locks execute more efficiently than normal spin locks, enforce a FIFO ordering of requests (which increases fairness) and can be used in either shared mode (for many readers) or exclusive mode (for one writer) .