What is the difference between the main idea and the theme of the story?

Question

2 points
A story has one main idea and three themes
The author will tell you the theme, but you have to guess the main idea.
There is no difference.
The main idea is what the story is mainly about. The theme is the message you take away from the story.

Answer 1

The last option is correct:
The main idea is what the story is mainly about. The theme is the message you take away from the story.