Given the question: Write a multi-choice question for the following article: Article: My name is Peter and I'm 12 years old. I don't have a brother or a sister. I am in No.2 Middle School. My parents are Gray and Nancy Wilson. My father is a worker and my mother is a music teacher. My father's parents are David and Jacy Wilson. They don't live with us. They live in the nearby city . David is 63 and Jacy is 61. They come to see us once a month . My mother's parents are Henry and Sara Smith. Henry is 62 and Sara is 58. They are farmers. They have a farm. They grow vegetables and rice . I like to go to see my grandparents.
The answer is:
Question: How many children do Gary and Nancy Wilson have?Options:A One.B Two.C Three.D Four.Answer:A