You have the following code. class ExamPrep { public static void main(String[] args){ String s = "Java"; // LINE 4 System.out.println(result); } } What can you put at line 4 so that the output of the program will be v? Choose the correct answer: A. char result = s[2]; B. char result = s[3]; C. char result = s.charAt(2); D. char result = s.charAt(3);