Eloqua - Update Rule Set

Hi Team,

We have a requirement where we have a multi select
picklist field "WHAT PRODUCTS ARE YOU INTERESTED IN" with the following
LOV values
1.CARRIER
2.OTHERS
3.OTIS
4.PARTS
5.SERVICES
6.TOSHIBHA
and also a textbox field "Primary Brand". So we are trying to upload a
bulk of contacts with these fields, where if a record has "WHAT
PRODUCTS ARE YOU INTERESTED IN" with selected combinations, there should
be only one "Primary Brand" for it.

The logic is like if
the LOV's selected contain "CARRIER", then the primary brand should be
"CARRIER", but if it contains "OTIS" and if "CARRIER" is not selected,