public class ClockDisplay { 1/private fields 1* Constructors for ClockDisplay objects */ public ClockDisplayo { hours = new Number Display(24); minutes = new Number Display(60); update Display } public ClockDisplay(int hour, int minute) { hours = new NumberDisplay(24); minutes = new Number Display(60); setTimer(hour, minute); } } Identify the differences between the two constructors? O A. No differences between the two constructors. O B. The first constructor calls setTimer(hour, minute) and the second constructor calls update Display. OC. The first constructor calls updateDisplay and the second constructor calls setTimer(hour, minute). D. None of the above