(i) Bullion means precious metal available in the form of ingots, (correct)
(ii) Punch-marked coins are the earliest coins used in India, (correct)
(iii) Non-Tamil literary sources also offer information on early Tamil society, (correct)
(iv) Millets were cultivated in the wet lands, (incorrect)
(a) (i) is correct
(b) (i) & (ii) are correct
(c) (i), (ii) & (iii) are correct
(d) (iv) is correct