What does your client connection do using this connect string?
net_service_name=
(DESCRIPTION=
(LOAD_BALANCE=on)
(ADDRESS=(PROTOCOL=tcp)(HOST=sales1-svr-vip)(PORT=1521))
(ADDRESS=(PROTOCOL=tcp)(HOST=sales2-svr-vip)(PORT=1521)))
(CONNECT_DATA=(SERVICE_NAME=sales.us.acme.com))
A.
It connects you to the least loaded node.
B.
It connects you to the least loaded instance.
C.
It randomizes its connection request on the available listeners.
D.
It connects you to the instance on the least loaded node that currently accepts logins for the SALES.US.ACME.COM service.