The correct option is B Tamizhakam
The Nadus were under the Perumals who ruled Kerala with their capital at Mahodayapuram. Rajasekharan, Sthanu Ravi, Kotakota Kerala Kesari, Adhithyan Kota, Ramakulasekharan were some Perumal rulers who ruled during 800-1122 CE with Mahodayapuram as their capital.