Which option is a feature of warm standby mode in disaster recovery?

A.
The applications at the secondary data center are usually ready to start.

B.
The backup data center has some applications running actively and some traffic processing the
service tasks.

C.
The time to recover, also known as Recovery Time Objective, for this scenario can require up to
several weeks.

D.
Offer the transparent operation and zero disruption required for business continuity.