3.WHICH IS THE TRUE IOF THE SIGNATURE WITH THE FLATS
To determine the name of the key signature with flats, you need to remember the order of flats in music theory. The order of flats is: B♭, E♭, A♭, D♭, G♭, C♭, and F♭.
To determine the key signature with flats, you should look at the last flat in the key signature. This flat is always one step below the last note name in the order of flats.
For example, if the last flat is B♭, then the key signature is in the key of B♭ major. If the last flat is E♭, then the key signature is in the key of E♭ major.
Therefore, to find the true key signature with flats, you need to look at the last flat and determine its note name. That will tell you the name of the key signature.