If medical imaging services are produced at the lowest cost for a given quality, but consumers value them less than the average cost (which equals the marginal cost in this case), then the imaging services are ______ (select all that apply).

Possible answers (select all that apply):

A. Technically efficient

B. Not technically efficient

C. Productively efficient

D. Not productively efficient

E. Allocatively efficient

F. Not allocatively efficient