Which one of both?
I would have chosen A, but I am not sure about the Grade Rating  :/ 
What do they mean with Grade Rating?
Player A: 
Star Rating: 5 Potential: 5 Position: PG Grade Rating: A  Age: 19 Height: 6'9''/206cm
 
Player B:
Star Rating: 5  Potential: 5 Position: C Grade Rating: A+ Age: 19 Height: 6'9''/203c