Question
												
															For every `a in ZZ_p`, we have an element
															`-a + langle f(x) rangle` in F.
															Which alternative is true:
															A) `-a + langle f(x) rangle ` is the additive identity in F.
															B) `0 + langle f(x) rangle` is the the additive identity in F
															
															
															
															?