In order to ensure that firms sell more products more profitably, what do marketers need to understand about individuals and organizations and the purchases they make

A.why, when, where,andhowthey make their purchases

B.when, how, where,andwith what funds dothey make their purchases

C.quantity, quality, variety,andpriceof the purchases they make

D.price, quantity, value,andqualityof the purchases they make

E.when they buy, where they buy,andwhich ones they buy