Which is the correct chronolo-gical order of following 'Acharyas?

• A. Shankara-Ramanuja-Madhav-Chaitanya
• B. Chaitanya-Ramanuja-Madhav-Shankara
• C. Ramanjua-Shankara-Chait-anya-Madhav
• D. Madhav-Chaitanya-Ramanuja Shankara