Suppose one transition rule of some PDA P is (q,0,X) = {(p,YZ), (r,XY)}. If we convert PDA P to an equivalent context-free grammar G which of the following could be a production of G derived from this transition rule? You may assumesandtare states of P, as well asp, q, andr. a)[qXq] 0[qYr][rZp] b)[qXq] [pYr][rZq] c)[qXq] 0[pYr][sZq] d)[qXq] 0[pYr][rZq]