Which sentence has the correct punctuation? 
 “I’m really tired of all this walking,” groaned Amy. “Can’t we rest for a minute?” 
 “I’m really tired of all this walking groaned Amy can’t we rest for a minute?” 
 “I’m really tired of all this walking,” groaned Amy “Can’t we rest for a minute?” 
 “I’m really tired of all this walking,” groaned Amy “can’t we rest for a minute?”