3322: The following persons came to India at one time or another :
I. Fa-Hien
II. I-Tsing
III. Megasthenese
IV. Hieun-Tsang
The correct chronological sequence of their visits is :
(a) III, I, II, IV
(b) III, I, IV, II
(c) I, III, II, IV
(d) I, III, IV, II