听力原文： I wasn't in school yesterday. I was absent. I was visiting my grandparents. They have a beautiful farm in the country. The farmhouse is beautiful too. It's not very big, but it's very nice. My mother was born there. My grandfather was born there, too.
My grandparents are getting old now, but they're still working. My grandfather is about sixty. He's still farming. My grandmother is still taking care of the house. She is a very good cook. I always have a good time there. I always like to see my grandparents and I like to eat, too — especially grandmother's cookies.
Why wasn't the author in school yesterday？

A. Because he was visiting his grandparents.
Because he was ill.
C. Because he didn't like his teacher.