Which of the following is logically equivalent to negPrightarrownegQ\\neg P \\rightarrow \\neg QnegPrightarrownegQ?
QrightarrowPQ \\rightarrow PQrightarrowP
PrightarrowQP \\rightarrow QPrightarrowQ
negQrightarrownegP\\neg Q \\rightarrow \\neg PnegQrightarrownegP
QlornegPQ \\lor \\neg PQlornegP