Which color are her eyes

Choose the letter A, B, C or D to answer these following questions

Miss. Mai is a famous singer. She is small and thin. She has long black hair and an oval face. She has brown eyes, a small nose and full lips. She is young and beautiful. Because of her busy work, she often leaves home for work very early and comes back home very late. She is willing to work hard to contribute to her fans all over the world.

Question: Which color are her eyes?