You can go to the place where you got them done and ask them to take them off. Or you can use a spare fake nail and wiggle it underneath the acrylic and it should pop off. Another way you can grow your nails out and clip off the acrylic nail with nail clippers as your nail grows.
Are you wanting to know the pitch below F#? if so that would be F.
D is the answer for this question
I believe it is a true statement
I’m pretty sure it’s 1.1 sorry if not