The correct option is A Yadavaprakasha
Ramanujacharya was born in 1017 CE at Sriperumbudur, near Chennai. He died in 1137 CE at Srirangam, near Tiruchirappalli. As a young boy, Ramanuja showed signs of religious awareness because of which he was sent to Kanchi for schooling, under the teacher Yadavaprakasha.