What Is the Difference Between Paraphrasing and Quoting

What is the difference between paraphrasing and quoting?

A) Paraphrasing is used in short, informal reports, whereas quoting is used in long, formal reports.
B) They are the same thing, except when you paraphrase you do not need to give credit to the original author while when you quote, you have to give credit to the original author.
C) Quoting is using the exact same words and grammatical structure used by the author, while paraphrasing is using your own words and grammatical structure to relate the author's line of thought. In both quoting and paraphrasing you have to give credit to the original author.
D) Paraphrasing is to use fewer words than those used by an author to relate what he or she said.