Which correctly describes the relationship between the teacher and the Sahibayn?

Imam Abu Hanifah was the teacher; Imam Abu Yusuf and Imam Muhammad al-Shaybani were his students and are the Sahibayn
Imam Abu Hanifah, Imam Abu Yusuf, and Imam Muhammad al-Shaybani are all the Sahibayn
Imam Malik and Imam Ahmad ibn Hanbal are the Sahibayn