All of the Following Are True About Mirrored Databases, Except

Multiple Choice

All of the following are true about mirrored databases, except ____.

A) it is not a good idea to have both copies of the database on the same disk
B) two copies of the entire database are maintained and both are updated simultaneously
C) the greater the distance between the two mirrored copies of the database, the greater the security
D) it is a relatively expensive proposition, but allows continuous operation in the event of a disk failure
E) it is an alternative to backward recovery