/* Constructor function for the Vehicle object */function Vehicle() { }/* Standard properties of a Vehicle */Vehicle.prototype.wheelCount = 4;Vehicle.prototype.curbWeightInPounds = 4000;/* Function for refueling a Vehicle */Vehicle.prototype.refuel = function() {    return "Refueling Vehicle with regular 87 octane gasoline";}/* Function for performing the main tasks of a Vehicle */Vehicle.prototype.mainTasks = function() {    return "Driving to work, school, and the grocery store";}/* Constructor function for the SportsCar object */function SportsCar() { }/* SportsCar extends Vehicle */SportsCar.prototype = new Vehicle();/* SportsCar is lighter than Vehicle */SportsCar.prototype.curbWeightInPounds = 3000;/* SportsCar requires premium fuel */SportsCar.prototype.refuel = function() {    return "Refueling SportsCar with premium 94 octane gasoline";}/* Function for performing the main tasks of a SportsCar */SportsCar.prototype.mainTasks = function() {    return "Spirited driving, looking good, driving to the beach";}/* Constructor function for the CementTruck object */function CementTruck() { }/* CementTruck extends Vehicle */CementTruck.prototype = new Vehicle();/* CementTruck has 10 wheels and weighs 12,000 pounds*/CementTruck.prototype.wheelCount = 10;CementTruck.prototype.curbWeightInPounds = 12000;/* CementTruck refuels with diesel fuel */CementTruck.prototype.refuel = function() {    return "Refueling CementTruck with diesel fuel";}/* Function for performing the main tasks of a SportsCar */CementTruck.prototype.mainTasks = function() {    return "Arrive at construction site, extend boom, deliver cement";}