A team of programmers is involved in reviewing a proposed design for a new utility class. After some discussion, they realize that the current design allows other classes to access methods in the utility class that should be accessible only to methods within the utility class itself.
What design issue has the team discovered?（）

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;

A. any class
B. only the Target class
C. any class in the test package
D. any class that extends Target

A.The code runs with no output.
B.An exception is thrown at runtime.
C.Compilation fails because of an error in line 20.
D.Compilation fails because of an error in line 21.
E.Compilation fails because of an error in line 23.
F.Compilation fails because of an error in line 25.