Which works were composed between c. 400-500 CE in Sanskrit and Prakrit?

All of the above

The correct answer is Option 4 - All of the above

Option 1- Sanskrit plays of Kalidasa
Option 2- Compilation of Jaina works in Prakrit
Option 3- Works on astronomy and mathematics by Aryabhata and Varahamihira
Option 4- All of the above

Sanskrit plays of Kalidasa; Works on astronomy and mathematics by Aryabhata and Varahamihira; and Jaina works in Prakrit were compiled/composed between c. 400-500 CE.