Which of the following fits the above description?

It is a hard-disk failure that occurs when a read-write head of a hard disk drive comes in contact with its rotating platter, resulting in permanent and usually irreparable damage to the magnetic media on the platter surface .

Which of the following fits the above description?
A . Electrical Failure.
B . Bad Platter Area.
C . Bad Sector.
D . Head Crash.

Answer: D