Which is a valid abstract class?
A.
public abstract class Car {
protected void accelerate();
}
B.
public interface Car {
protected abstract void accelerate();
}
C.
public abstract class Car {
protected final void accelerate();
}
D.
public abstract class Car {
protected abstract void accelerate();
}
E.
public abstract class Car {
protected abstract void accelerate() {
//more car can do
}}
is E incorrect doesn’t specify but may or may not have implementation hard to tell