Please explain to me which is the right answer and WHY it is the right answer. if possible also what he means by RAID system because he did not explain this well in class.

Into your server system you have installed the following components

- a 1 TB hard disk

- a 1.5 TB hard disk

- a 2.5 TB hard disk

- a 2.5 TB hard disk

If you want to setup a classical RAID 5 system (based on this hardware), what is the total space that can be used for data

A.

2 TB

B.

2.5 TB

C.

3 TB

D.

3.5 TB

E.

4 TB

F.

5 TB

G.

6 TB

H.

12 TB