Given the following class structures, which lines can be inserted into the blank independently that would allow the class to compile? (Choose two.) 

A. dino.Pterodactyl()
B. Dinosaur.new Pterodactyl()
C. dino.new Pterodactyl()
D. new Dino().new Pterodactyl()
E. new Dinosaur().Pterodactyl()
F. new Dinosaur.Pterodactyl()

public class Dinosaur { class Pterodactyl extends Dinosaur {} public void roar () { var dino = new Dinosaur(); } }