In the number series given below, one number is missing. Each series is followed by five alternatives (1), (2), (3), (4), and (5). One of them is the right answer. Identify and indicate it as per the “instructions”.

3, 13, 31, 57, …. 

(1) 65 

(2) 72 

(3) 88 

(4) 94 

(5) 91