Which two configuration settings would accomplish task?

A customer wants to set up storage so that the LUNs have no possibility to go offline. There are multiple LUNs per volume. There should be extra available space in the volume for snapshot copies.

Which two configuration settings would accomplish task? (Choose two.)
A . Volume guarantee = volumeLUN reservation = enabledFractional reservation =100%Snapshot autodelete = disabledAutogrow = enabled
B . Volume guarantee = noneLUN reservation = enabledFractional reservation =0Snapshot autodelete = enabledAutogrow = enabled
C . Volume guarantee = volumeLUN reservation = enabledFractional reservation =0Snapshot autodelete = disabledAutogrow = disabled
D . Volume guarantee = volumeLUN reservation = enabledFractional reservation =100%Snapshot autodelete = enabledAutogrow = disabled

Answer: A,D