What is the last step when adding a drive to a Dell EMC PowerStore system?

What is the last step when adding a drive to a Dell EMC PowerStore system?

A. Verify the new drive is seen

B. Add the drive to the pool
C. Backup the keystore
D. Zero the drive

Reference: https://www.dell.com/support/manuals/pk/en/pkbsd1/powerstore-9000t/pwrstr-isg/install-a-25-drive?guid=guid-bddae51e-a561-4e84-bc0a-c2e99a43f033&lang=en-us