What Is the Difference Between a Scientific Literature Source and a Nonscientific

What is the difference between a scientific literature source and a nonscientific literature source?

A) Scientific literature sources undergo a peer review process, whereas nonscientific literature sources do not.
B) Scientific literature sources describe the results of research studies, whereas nonscientific literature sources do not.
C) Scientific literature sources are always published in journals, while nonscientific literature sources are usually only in magazines.
D) Scientific literature sources are read by more people than nonscientific literature sources.