Which of the following is not a drawback of using hot sites?

Which of the following is not a drawback of using hot sites?

A.
Hot sites need security controls, as they usually contain mirrored copies of live production data.

B.
It’s expensive to have full redundancy in hardware, software, communication lines, and applications.

C.
Hot sites are available immediately or within maximum tolerable downtime (MTD).

D.
Transaction redundancy controls need to be implemented to keep data up to date.

Explanation:

The immediate availability of a hot site is a definite advantage, not a
drawback.