Read the rules: the owner must have owned and lived in it for 24 months out of the 60 months prior to the sale date. 

Owned and lived  in it 60 months, rented it for 24 months(I assume for the last 24 months it was owned before sale.

Counting backwards from sale date, rented 24 months, owned and lived in it for the prior 36 months of the total 60 prior to sale. How does that work for you?

If you still have questions, hire a professional.