根据对话内容排列顺序。

Amy: What are you going to do this weekend?

Sarah: I'm going to go shopping on Saturday morning.

Amy: And then?

Sarah: In the afternoon, I'm going to visit my grandparents. And in the evening I'm going to read books.

Amy: When are you going to the science museum?

Sarah: I'm going to the science museum on Sunday afternoon. Would you go there with me?

Amy: Sure.

( ) Sarah is going to read books.

( ) Sarah and Amy are going to the science museum.

( ) Sarah is going to visit her grandparents.

( ) Sarah is going to go shopping.