Mr. Brown is a middle-aged man with a mustache and a kind smile. He usually wears a suit and glasses. He is known for being a very patient teacher who always listens carefully to his students' problems and tries to help them find solutions. Students feel comfortable talking to him because he is very understanding.
Which of the following statements about Mr. Brown is correct based on the text?
A) Mr. Brown looks angry because he always wears a suit.
B) Students like Mr. Brown because he is a patient and understanding teacher.
C) Mr. Brown is a young man with a beard.
D) He never wears glasses, but he has a mustache.