A、insert a call to this() in the Car constructor

B、insert a call to this() in the MeGo constructor

C、insert a call to super() in the MeGo constructor

D、insert a call to super(vin) in the MeGo constructor

E、change the wheelCount variable in Car to protected

F、change line 3 in the MeGo class to super.wheelCount = 3;