QUESTION 2 If you apply the modus ponens inference rule to: 72 + y and hz, what do you get? OA. hy OB. Z . OD. z QUESTION 3 The current state of the world is {a.c,e). You apply an action with the precondition a and the effect when (e A -b) (FA -c). What is the resulting state? O A. The action is not applicable. O B.{a,e} OC.{a,c,e.f} OD.{a,e.f)