I've found multiple answers to this question. Some say it's C and others say D. Can you provide information on which is correct and why?

Question in point) J Saved Which of these conditions does NOT characterize perfect competition? 0 a. a large number of buyers and sellers act independently. O b. firms produce identical products and are "price takers. " G) c. information Is "imperfect," allowing individuals or firms to pay more for products than their costs of prOduction. Q d. individuals are motivated by self-interest, not societal welfare