Which of the following sources mention the occurrence of the Third Buddhist Council during the reign of Asoka?

(1) Inscriptions of Asoka
(2) Dipavamsa
(3) Mahavamsa
(4) Divyavadana

Select the correct answer from the code given below:

A) 1, 2

B) 2, 3

C) 3, 4

D) 1, 4

This MCQ is part of the UP PSC Previous Year Questions (PYQs) series, focusing on UPPSC Prelims 1999 (GS Paper I)