Answer:
INCREMENTAL cost allocation method
Step-by-step explanation:
Incremental cost allocation method is the ranking of individual users of the cost object in such a way that the order of users most responsible for the common cost and then uses its ranking to allocate cost among those users. So they'd be ranked from primary user to first incremental user to second incremental user and so on until the cost have been assigned to all users. It requires one user to be seen as the primary user/party and other users to be seen as incremental user/party.