International Mobile Equipment Identifier (IMEI) is a 15-dlgit number that indicates the manufacturer,
model type, and country of approval for GSM devices. The first eight digits of an IMEI number that
provide information about the model and origin of the mobile device is also known as:

A.
Integrated Circuit Code (ICC)

B.
Type Allocation Code (TAC)

C.
Device Origin Code (DOC)

D.
Manufacturer identification Code (MIC)