Step 1: Samudragupta.
The Prayag Prashasti (Allahabad pillar inscription) was written by Harisena during Samudragupta’s rule. Therefore, A corresponds to III.
Step 2: Chandragupta II (Vikramaditya).
The Mehrauli Iron Pillar inscription is linked to Chandragupta II. Therefore, B corresponds to I.
Step 3: Pulakesin II.
The Aihole inscription, authored by Ravikirti, details the accomplishments of Pulakesin II. Therefore, C corresponds to IV.
Step 4: Ashoka.
The Girnar inscription is one of Ashoka’s edicts. Therefore, D corresponds to II.
Step 5: Conclusion.
In conclusion, the correct match is A-III, B-I, C-IV, D-II.