Consider the program below and assume all the headers are included. class Train { public: Train() : speed() {} Train(int newSpeed); int getSpeed() const; Train() { } private: int speed; class Bullet Train : public Train { public: Bullet Train() : controlsystem() {} Bullet Train(int newSystem, int newSpeed); void displayData() const; Bullet Train() {} private: int controlsystem; }; }; Train:: Train(int newSpeed) { speed = newSpeed; } int Train::getSpeed() const { return speed; } Bullet Train::Bullet Train(int newSystem, int newSpeed) Train(newSpeed * 2) { controlsystem = newSystem; } void Bullet Train::displayData() const { cout