The correct options are
A He was the first ruler in South India to issue gold coinage .
B Pulakeshin II defeated his uncle Mangalesh in his ascension to the throne .
C He defeated the Pallavas of Kanchi .
Pulakeshin II was the first ruler in South India to issue gold coinage . When his uncle Mangalesh tried to take over the kingdom, Pulakeshin II defeated him to claim the throne. He defeated Lata, Malwa and Gurjaras in the north and proceeded towards Gujarat. In East kings from Vengi, Kalinga and Kosala surrendered to him. He also defeated the Pallavas of Kanchi in the south. Crossing the Cauvery river, he made contracts with Cholas, Cheras and Pandyas.