With respect to Computers, which of the following are permanent storage devices?
(A) Pen Drive
(B) Hard Disk
(C) Compact Disk
(D) RAM
Choose the correct answer from the options given below:
1
(A), (B) and (C) only
2
(B), (C) and (D) only
3
(A), (C) and (D) only
4
(A), (B) and (D) only