which order will you execute these commands?

You want to add host03 to a Flex cluster. In which order will you execute these commands?

A.
1, 2, 3, 4, 5, 6

B.
1, 2, 5, 3, 6, 4

C.
3, 5, 6, 2, 1, 4

D.
3, 6, 5, 1, 2, 4

E.
5, 6, 3, 1, 4, 2