Who is the Angel???

Here is a very logical question that i have found that i would like to share with you all.

Situation:

Once there is an Angel, a Demon and a Human.

The Angel always speaks the truth, the Demon always lies while Human does both from time to time.

A woman in Black Robe says this:" I am not the Angel"
Another woman in Blue Robe says:" I am not the Human"
The last woman in White Robe says:"I am not the Demon"

Then, the question is who are three of them?

Think about it, it is very logical. Nothing to screw your mind up. The answer is as
provided in the comments. Have fun with it.