Both disk shelves must be added to the same stack. How would you install the disk shelves?

You are installing two disk shelves on an existing clustered Data ONTAP system. One shelf is a DS2246 that matches the other shelves in a stack. The other shelf is also a DS2246 but it contains all solid state disks.

Both disk shelves must be added to the same stack. How would you install the disk shelves?
A . Install the spinning disk shelf first and put the solid state disks at the end of the stack.
B . Advise the customer that solid state disks cannot exist on the same stack as spinning disks.
C . Install the solid state disks first, then the DS2246 shelf so that the solid state disks are as close to the top of the stack as possible.
D . Move the disk drives around to create two shelves that are half solid state and half spinning drives.

Answer: A