Identify the Letter of the Choice That Best Matches the Phrase

Identify the letter of the choice that best matches the phrase or definition.
-Enclosed in an airtight, sealed case to protect it from contamination

A) capacity
B) DVD
C) density
D) RAID
E) NAS
F) EIDE
G) SAS
H) SSD
I) USB flash drive
J) cloud
K) RFID
L) sectors
M) CD-RW
N) CD-ROM
O) CD-R
P) transfer rate
Q) hard disk
R) volatile
S) WORM
T) direct access