Setting Up a Marketing Information System Can Be Valuable to Marketing

Setting up a marketing information system can be valuable to marketing managers because

A) most companies have a great deal of useful information,but it often isn't available or accessible when the manager needs it.
B) most market-oriented companies only need a certain type of information once or twice.
C) marketing research data is rarely as accurate as data from a marketing information system.
D) market-oriented managers can always use more data.
E) a company that can't afford marketing research should at least have a marketing information system.