Answer: The correct option is C.
Step-by-step explanation:
A. Doesn't use any commas, so that's out of the question.
B. I use the comma as a way of saying "and" so "I have decided to wear and my purple dress" doesn't make sense.
C. Makes perfect sense "We had meatloaf AND mashed potatoes AND green beans and rolls for dinner."
D. It didn't separate fairy tales and magazines so that is incorrect
So C. is the best option.