What single storage system design would provide the best performance and reduce floor space?

An organization plans on building their own cloud solution and is designing a new storage environment with the following requirements:

– Current IOPS = 25,000

– Expected growth rate = 100%

Storage vendor specifications:

– Max storage blocks in a storage system = 8

– Max number of drives per storage block = 24

– Max IOPS per HDD drive = 180

– Max IOPS per SSD drive = 450

What single storage system design would provide the best performance and reduce floor space?
A . 1 SSD storage block and 6 HDD storage blocks
B . 8 HDD storage blocks
C . 4 SSD storage blocks and 4 HDD storage blocks
D . 6 SSD storage blocks