John, who got a car accident, last week, has three pens. Sunchai, who his father is a waiter, has not a pen but he has six erasers and a beautiful red pencil box which he stole from Andrew last week. Adam has a white ruler and four yellow bicycles. Malee has not it but she has a luxurious sport car which she got from her father as a reward for first division last semester. Joli,who is a basketball player of the school, has a ball and she has also three dolls. Maria has not it but she has a Sony computer which she got from her mother as a birthday gift.
How many rulers does Adam have?
1
2
3
4