What Is the Difference Between a Primary and a Secondary

Multiple Choice

What is the difference between a primary and a secondary source?

A) A primary source is the original material published by the scientists, whereas a secondary source is a description of the original material.
B) A primary source is the raw data before scientists publish, whereas a secondary source is a description of the original material.
C) A primary source is the original material published by the scientists, whereas a secondary source is the raw data before scientists publish.
D) There is no difference between primary and secondary sources.