What can a network administrator determine from the output in the exhibit?

Refer to the exhibit.

What can a network administrator determine from the output in the exhibit?
A . The switch will boot the primary software on its next boot.
B . The switch has no software stored in the secondary slot.
C . The switch is using the config file in the primary slot for its startup-config.
D . The switch booted the primary software on its previous boot.

Answer: D