Data Gathered from Various Telecommunication Companies (E

Multiple Choice

Data gathered from various telecommunication companies (e.g.cable, phone, internet service providers) and utility companies (electric, fuel, etc.) were merged into
One data warehouse.Below are some of the variables for which data were collected.
Which is/are demographic?

A) Number of residents in household.
B) Gender of head of household.
C) Monthly electricity usage.
D) Both A and B