Crucial Assertions in the Menu-Cost Literature Are That Those Costs

Multiple Choice

Crucial assertions in the menu-cost literature are that those costs ________ be large for them to have an effect on firms' pricing,while potential total welfare losses ________ menu costs that have been avoided.

A) need not,may be several times larger than
B) need not,are generally much less than
C) must,may be several times larger than
D) must,are generally much less than