Please answer the following question: Read the following article and select the best answer. Article: A boy couldn't speak when he was 3 years old. A lot of people thought he was a foolish boy. When the boy was 9 years old, he could speak but he still couldn't speak well. His teacher didn't like him at all and his classmates laughed at him. He felt very sad, One day his father had a walk with him. They went to a wood and there were a lot of trees there. Then his father took him to two trees and said to him."Boy, this tree is sabal (,)and this tree is fir . Sabal grows very quickly at first but a few years later, it will stop growing, so the tallest Sabal can't reach ten meters. But the fir is different, it grows very slowly at first but it never stops growing so it can grow very tall." Then his father took him to another fir. It was so tall, so strong. It can reach the sky. The father said to his son, "Son, you are the fir."The boy understood his father's words. The boy became a very great scientist. Do you know who he is? He is the world-famous scientist. His name is Einstein. Question: What do you think of the boy's father? - He doesn't like the boy. - He is a great father. - He often takes a walk with his son. - The boy doesn't like his father.
A:
He is a great father.