The assumptions about assignees and tasks that needs to hold for a problem to be an assignment problem are $($select all that applies$)$

Group of answer choices

there must be equal number of assignees and tasks

each assignee is to be assigned to exactly one task and each task is to be performed by exactly one assignee

each assignee is to be assigned to any task and each task is to be performed by a number of assignee

there is a cost associated with each combination of an assignee performing a task

the objective is to determine how all the assignments should be made to minimize the total cost.

the objective is to determine how all the assignments should be made to maximize the total cost.