Despite its many advantages, what is a concern that advertisers might raise with respect to the "objective and task" approach to budgeting?

Group of answer choices

The approach is very similar to the arbitrary allocation method.

It most likely ignores research the firm or its agency may have conducted.

It relies exclusively on the hierarchy-of-effects model (communications effects pyramid) for direction.

It may be difficult to identify the specific tasks and estimate the actual costs of obtaining the objective.

All of the above are legitimate concerns.