- $1$ Giga Byte $ = 1024$ Mega Byte $=1024 \times 1024 $ Kilo Byte $= 1024\times 1024\times1024$ Byte $= 1024\times 1024\times1024\times 8$ bits
- CRT $:$ Cathod Ray Tube
- ROM $:$ Read Only Memory
- CPU $:$ Central Processing Unit
So,the correct answer is $(C).$