Logichard
0:00.0

In first-order resolution, we resolve clauses by finding a most general unifier (mgu). Consider the following two clauses: $$C_1 = P(x, f(y)) \lor Q(x, y)$

C_2 = \neg P(g(z), z) \lor R(z)$$ where x, y, zarevariables,andare variables, andf, garefunctionsymbols.Whichofthefollowingisavalidresolventofare function symbols. Which of the following is a valid resolvent ofC_1andandC_2$?