please kindly help solve this java questions! God bless! Thanks !

Convert the following iterative method to one that uses recursion: public static void sign(int n) {while (n > 0) {System.out.println("No Parking"); n--;}} The following statement creates an ArrayList object. What is the purpose of the notation? ArrayList arr = new ArrayList (); a It specifies that only String objects may be stored in the ArrayList object. B It specifies that the get method will return only String objects. C It specifies that String objects may not be stored in the ArrayList object. d It specifies that everything stored in the ArrayList object will be converted to a String