Please explain. Thank you!!

Question 7 (5 pts) Examine the classes below. Choose correct answers for output from the choices given below. class Heater \{\} class SolarHeater extends Heater \{ class Electricheater extends Heaterf class House f public void heat (Heater heater) f System, out.println ("House with Electric Heater"); f class EcoHouse extends House \{ public void heat (SolarHeater heater) \{ System, out.println ("Eco House with Solar Heater"); 1 public void heat (Heater heater) \& System, out.println("Eco House with Electric Heater"); f public class Midterm f public static void main(String[] args) \{ House house = new EcoHouse (); Heater heater = new solarHeater(); house heat (heater); Select from choices below: a) House with Electric Heater b) Eco House with Solar Heater c) Eco House with Electric Heater d) Compile-time errors e) None of the above. My