Which of the following destruction methods would BEST accomplish this task?

A contractor needs to destroy several drives containing confidential information so that they
can never be used again. Which of the following destruction methods would BEST
accomplish this task?

A.
Overwrite the hard drives.

B.
Drill into the hard drives.

C.
Degauss the hard drives.

D.
Sanitize the hard drives.

Explanation:

Reference:
https://groups.google.com/forum/#!topic/refurbishers/lwOPyBdrKi4