A Mink Coat Retailer Wishes to Locate in Cities That

A mink coat retailer wishes to locate in cities that may offer good market potential for their coats.They need cities with average incomes exceeding $85,000.However,the secondary information source they find has income category of $70,000 to $100,000.This represents a major disadvantage of secondary data

A) different units of measurement.
B) different class definition.
C) out of date data.
D) data having high credibility.
E) Both a and b.