What is the difference between rising action and falling action?

a. rising action describes the events that ultimately shape the main plot of the story; falling action describes in detail the main event of the story.

b. rising action introduces the characters and setting of the story; falling action details different events and circumstances that lead to the climax of the story.

c. rising action deals with the events that lead to the main event of the story; falling action deals with the effects of the main events on the characters and the story.

d. rising action describes the main event of the story that leads to a resolution; falling action describes the tying up of loose ends as a result of the main event.