What are two functions of the Flash Translation Layer? (Choose two.)

A.
It mirrors writes to the alternate controller.

B.
It maps pages to logical blocks.

C.
It manages component wear.

D.
It supports high availability.

E.
It defines the write cliff.

Explanation:
http://drona.csa.iisc.ernet.in/~gopi/west10/goodson.pdf (page 1&2)