What does the SSSU term spare policy translate to in Command View?

A.
disk failure protection level

B.
number of spares available for reconstruction

C.
actions to take if sparing is required

D.
storage system level protection

Explanation:
Reference:http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c02493404/c0249340
4.pdf(page 38)