Correct answer: (a) II, I, III, IV
Explanation
- A
II, I, III, IV
(a) II, I, III, IV. Bilgram/Kannauj (1540) is Humayun versus Sher Shah; Sarnal (1572) is Akbar’s Gujarat campaign; Dharmat (15 April 1658) opens Aurangzeb’s war of succession; Jajau (1707) is the Bahadur Shah–Azam fight after Aurangzeb’s death. That is the only rising chronology.
- B
II, III, IV, I
(b) II, III, IV, I. Puts Dharmat and Jajau before Sarnal, leaping from 1540 to 1658 and leaving Akbar’s 1572 battle last.
- C
III, II, I, IV
(c) III, II, I, IV. Opens with Dharmat (1658), decades after Bilgram and Sarnal.
- D
III, I, II, IV
(d) III, I, II, IV. Again starts in 1658 and then backtracks to 1572 and 1540.
Summary. Official key is (a) II, I, III, IV. Order is Bilgram 1540 → Sarnal 1572 → Dharmat 1658 → Jajau 1707. Any code that leads with Dharmat starts two centuries late. Honour the stored letter (a).