Statement (B) : Angle between the reaction force and the normal reaction is called angle of friction.

statement (A) : The normal reaction on a body and the frictional force are always perpendicular to each other

(i) We defined the horizontal component of contact force as friction and vertical component of contact force as normal reaction. Therefore both normal reaction(N) and friction(f) always remain perpendicular to each other.

 (ii) We defined the angle between the contact or reaction force(R) and normal reaction(N) as angle of friction.

So both given statements are true