Option c is the correct answer. The reign of Chola rule in Srilanka started when Rajaraja I first conquered the northern half of Srilanka and then in 1018, Rajendra I invaded the Ceylon in Srilanka and finally annexed the entire island. The Cholas ruled over Sri Lanka for about a century, until they were driven out by the Sinhalese king Vijayabahu I in 1070 CE.