Which ruler of the Satavahana dynasty claimed to be a unique Brahmana (eka bamhana)?

Gotami-puta Siri-Satakani

The correct answer is Option (1) → Gotami-puta Siri-Satakani

The best-known ruler of the Satavahana dynasty, Gotami-puta Siri-Satakani, claimed to be both a unique Brahmana (eka bamhana) and a destroyer of the pride of Kshatriyas. He also claimed to have ensured that there was no intermarriage amongst members of the four varnas. At the same time, he entered into a marriage alliance with the kin of Rudradaman.