Which sentence below uses commas correctly?
 A. 
Melissa and Amy went shopping at the mall and bought two video games, three new books, and a puzzle.
 B. 
Melissa, and Amy went shopping at the mall, and bought, two video games three new books, and a puzzle.   
 C. 
Melissa and Amy went shopping, at the mall and bought two, video games, three new books and a puzzle. 
 D. 
Melissa and Amy, went shopping at the mall, and bought two video games three new, books and a puzzle.