Tai Chu entered 'Iolani and attended until graduating in 1882. Classmate C. K. Ai called him Sun Tai-Cheong. Later, he was known as Dr. Sun Yat-sen, the Father of Modern China. What is the name by which Tai Chu was known as later?
1) Sun Tai-Cheong
2) C. K. Ai
3) Dr. Sun Yat-sen
4) Iolani