Choose the statement below which would best describe a Hard

Disk Drive $($HDD$)$:

$($a$)$ Electro$-$mechanical device which uses both electrical and

moving components

$($b$)$ Device which makes use of a laser beam to create tiny pits

on the surface of the disk

$($c$)$ Electronic means of storage and has no moving parts

$($d$)$ Volatile memory which is limited in size