Read the following passage and choose the item (A, B, C or D) that best answers each of the questions about it.

Nick Johnson lives with his parents, and his sister. They live in Wembley, in north London. Nick’s mum is called Sue. She works in a supermarket. His dad is called Jim and he works in a bank. Nick’s sister is called Tracy. She is nine years old. There is also a dog in the family. His name is Fred.

How many people are there in Nick Johnson’s family?