public class Road

{

private String roadName;

public Road(String name)

{

roadName = name;

}

}

public class Highway extends Road

{

private int speedLimit;

public Highway(String name, int limit)

{

super(name);

speedLimit = limit;

}

}

The following code segment appears in a method in another class.

Road r1 = new Highway("Interstate 101", 55); // line 1

Road r2 = new Road("Elm Street"); // line 2

Highway r3 = new Road("Sullivan Street"); // line 3

Highway r4 = new Highway("New Jersey Turnpike", 65); // line 4

Which of the following best explains the error, if any, in the code segment?

• A) Line 1 will cause an error because a Road variable cannot be instantiated as an object of type Highway.

• B) Line 2 will cause an error because the Road constructor is not properly called.

• C) Line 3 will cause an error because a Highway variable cannot be instantiated as an object of type Road.

• D) Line 4 will cause an error because the Highway constructor is not properly called.

• E) The code segment compiles and runs without error.