The correct option is A A
Here, "If you would..." should be substituted with "If you could...". The given sentence denotes how an action taken in the past would have affected a future event. 'Could' is used to refer to some ability someone had in the past whereas would, here, is used to denote a possibility that is conditional. However, this possibility that 'would' represents is sure to occur if those conditions are fulfilled. Here, the condition hinges on 'could'- "If you could have come earlier", then "there would have been enough time for us to go to the movie which has been running to full-houses."