A Bank Spent Several Thousand Dollars Surveying Customers to Learn

A bank spent several thousand dollars surveying customers to learn if customers were able to conduct transactions at the bank's ATMs. Their ATMs record, up to 4 decimal places, the times when the units are down. This situation illustrates the point that:

A) ATM's are seldom unavailable.
B) ATMs are not dependable.
C) the better banks conduct marketing research.
D) marketing research should not be conducted when the information needed is already available.
E) marketing research should be used when the information needed is already available.