Assignemnt 117 and More Number Puzzles

Code

    /// Name: Xinting Chen
    /// Period: 7
    /// Program Name: More Number Puzzles
    /// File Name: MoreNumberPuzzles.java
    /// Date Finished: 5/4/2016
  
        import java.util.Scanner;
        public class MoreNumberPuzzles
        {
        	public static void main( String[] args ) throws Exception
        	{
        		System.out.println();
                
                int c = 0;
                do
                {
                    c = choices();
                    System.out.println();
                    if(c==1) optionA();
                    if(c==2) optionB();
                    
                    System.out.println();
                }
                while (c!=3);
                System.out.println("Bye.");
            }
            public  static int choices()
            {
                System.out.print("1) Find two digit numbers <=56 with sums of digits >10\n" + 
                                 "2) Find two digit numbers minus number reversed which equals sum of digits\n"+
                                 "3) Quit\n" + "\n" + ">");
                Scanner keyboard = new Scanner(System.in);
                int answer= 0;
                
                answer = keyboard.nextInt();
                
                if (answer <1 || answer>3)
                    System.out.println("enter a number between 1 and 3");
                return answer;
            }
            public static void optionA()
        	{
        		for ( int i = 1; i < 10; i++)
        		{
        			for ( int a = 0;a < 10; a++)
        			{
        				if ((i*10+a)<=56 && (i+a>10) )
        				{
        					System.out.print(i);
        					System.out.print(a + "  ");
        				}
        			}
        		}
        	}
        
        	public static void optionB()
        	{
        		for ( int i = 1; i < 10; i++)
        		{
        			for ( int a = 0; a < 10; a++)
        			{
        				if ((i*10+a)-(a*10+i)==(i+a) )
        				{
        					System.out.print(i);
        					System.out.print(a+"  ");
        				}
        			}
        		}
        	}
        }
    

Picture of the output