Which of the following is not one of the sources from which evidence of Indo-Roman trade

Q. Which of the following is not one of the sources from which evidence of Indo-Roman trade during the Sangam Age is derived?

(a) Sangam literature

(b) The Roman coins of silver and gold found on the South Indian coast

(c) Discovery of a Roman hoard at Arikamedu, near Pondicherry

(d) The accounts of Chinese and Roman travellers

Ans: (d) The accounts of Chinese and Roman travelers