What is the minimum number of 3.84 TB drives that must be installed to meet the requirement?

During a PowerMax 2500 install, a customer realizes that an additional 10 TB raw capacity is needed for a new application. The PowerMax is configured with RAID 1 using forty-six 3.84 TB drives.

What is the minimum number of 3.84 TB drives that must be installed to meet the requirement?
A . 3
B . 2
C . 7
D . 8

Answer: C