Through my research I found questions similar to this and answers that match and they are the following:
A.) Two tone
B.) Five tone
C.) Eight tone
D.) Twelve tone
Among those following choices the best answer would be A) or the first option.
I had put the answer on a ScreenShot, so you can see what part is what.(I hope this helps you! Feel free to message me if you have any further questions :) Have a nice day!!)