public static void main(String[] args) { ArrayList nums = new ArrayList(); nums.add(1); nums.add(2); nums.add(3); nums.add(4); nums.add(1,2); nums.set(3,7); System.out.println(nums); } After executing the main method above, what is printed to the screen? a. [2, 2, 7, 4] b. [2, 1, 4, 7, 4] c. [1, 2, 2, 7, 4] d. [1, 2, 3, 7, 4] e. [1, 2, 3, 7]