What will be the output of the following Java program?

class output
{
    public static void main(String args[])
    {
        char c[]={'a','1','b',' ','A','0'];
        for (int i = 0; i < 5; ++i)
        {
      if(Character.isDigit(c[i]))
                System.out.println(c[i]" is a digit");
            if(Character.isWhitespace(c[i]))
               System.out.println(c[i]" is a Whitespace character");
            if(Character.isUpperCase(c[i]))
               System.out.println(c[i]" is an Upper case Letter");
            if(Character.isUpperCase(c[i]))
               System.out.println(c[i]" is a lower case Letter");
            i = i + 3;
        }
    }
}

A. a is a lower case Letter
  is White space character

B. b is a lower case Letter
  is White space characte

C. a is a lower case Letter
A is a upper case Letter

D. a is a lower case Letter
0 is a digit

Answer: Option A