Which of the following is the MOST secure method, short of physical destruction, that would be used to ensure that data on a hard drive cannot be recovered?

Which of the following is the MOST secure method, short of physical destruction, that would be used to ensure that data on a hard drive cannot be recovered?

A.
Use a degaussing tool

B.
Format the drive

C.
Use an overwrite program

D.
Repartition the drive