Identify the correct order of the tasks that apply to this effort

To configure the network in preparation for installing the Oracle Grid Infrastructure for a cluster, a
number of tasks have been listed.
Assign a public and private IP.
Define a SCAN that resolves to six IP addresses in your DNS.
Assign a virtual IP on a different subnet from the public.
Identify the interface and IP addresses for only the first node in your RAC.
Determine your cluster name.
Assign a virtual IP on the same subnet as your public IP.
Identify the correct order of the tasks that apply to this effort.

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

B.
1, 5, 6

C.
2, 4, 6

D.
1, 4, 5, 6

Explanation:
http://docs.oracle.com/cd/E11882_01/rac.112/e17264/preparing.htm#TDPRC135