On the Subject of Cruel Digital Root

Unicorns where the correct answer is wrong? Splendid!

Lit SIG and no 5 in display, press the YES button.

Take the digital root of the top display and the digital root of the bottom display.

If they are equal, press the YES button. Otherwise, press the NO button.

	Yes	No	Yea	Nay	Y	N
Green	No	No	Yes	No	No	Yes
Dark Green	Yes	Yes	Yes	No	No	Yes
Red	No	Yes	No	Yes	No	No
Dark Red	Yes	No	Yes	No	Yes	Yes