Which of the following are examples of secondary data (as contrasted with primary data)?

A. Results of an experiment used to evaluate advertisement effectiveness for a new product.

B. Consumer attitudes as measured by an attitude questionnaire designed and used by a researcher investigating a model of consumer behavior.

C.Housing data especially collected from a sample by a researcher working on a project for a construction company.

D.Demographic information (birth, age, marriage, income, etc.) collected from a sample of respondents as a part of a market segmentation study for a prominent grocery chain.

E. Housing data (tenure, race of occupants, year built, etc.) as reported in the Journal of Marketing and later used by a researcher working on a project for a construction company.