Q: Later, at a feast for Daenerys and Khal Drogo, a drunken Viserys draws his sword on his sister, threatening that if the Khal does not give him an army to take back the Seven Kingdoms, he will take back Daenerys and cut out her child. Khal Drogo agrees to give him the "golden crown" that he wants, and Viserys lets his guard down, allowing Drogo's bloodriders to restrain him. Drogo melts his belt in a stewpot, and Viserys realises to his horror that the "golden crown" is actually molten gold, which Drogo pours on his head. Daenerys watches her brother's painful death calmly, and coldly observes: "He was no dragon. Fire can not kill a dragon."

Answer this question: who had molten gold poured over their head?
A: Viserys
Explain how we arrive at this answer:
Explanation: To answer the above question, the relevant sentence is: Drogo melts his belt in a stewpot, and Viserys realises to his horror that the "golden crown" is actually molten gold, which Drogo pours on his head.