SQL & PL/SQL :: List Most Popular Product For Every State?

so here is the query : For every state, list the most popular product. Here is the query I have so far :

SELECT C.State, P.Product_Name, Count(*) cnt FROM Product P, Customer C, OrderTable O, LineItem L WHERE C.CID = O.CID AND O.OID = L.OID AND L.PID = P.PID GROUP BY C.State, P.Product_Name;

Result :
STATE PRODUCT_NAME COUNT(*)
---------- -------------------- ----------
New Jersey Computer 3
Texas Computer 1
New Jersey Speaker 2

I would need the result to only say New Jersey Computer and Texas Computer because I only want a list of the states with the product name that is sold the most in each state.All I need to do is have the query only select the product name with the max count for each state...