Why is this FBD statically indeterminate at point A?

[MrJoseBravo]

Homework Statement

http://prntscr.com/5aj6fz

Homework Equations

Efy=0
Efx=0
EM=0

The Attempt at a Solution

I drew a FBD and assigned x and y components at A. There is a normal force at B and F and M are known. I took this to mean that there are 3 unknowns in the problem, which should be able to be solved by my understanding.
I don't uderstand why its statically inderterminate. Any help is appreciated. Thank you!

 

[haruspex]

assigned x and y components at A

it's a clamped support, not a free moving joint.

 

[PhanthomJay]

There is more going on at A besides the x and y reaction forces at this fixed support.