Identify the Letter of the Choice That Best Matches the Phrase

Identify the letter of the choice that best matches the phrase or definition.
-When working with a command-line interface, the set of commands entered into the computer is called this

A) virtualization
B) mobile operating system
C) Blackberry
D) sleep mode
E) hibernate
F) administrator account
G) user name
H) password
I) Google Play
J) permissions
K) thrashing
L) NFC
M) Passbook
N) command language
O) Wallet
P) SkyDrive
Q) Linux
R) antivirus
S) iCloud
T) account