For how many years Ajitnath Tirthankar practise harsh austerity?

Ten
Twelve
Fourteen
Sixteen

The correct answer is: A. Ten.

Ajitnath Tirthankar was the tenth Tirthankar of the present age. He was born in a royal family in the city of Ayodhya. He renounced his kingdom and practiced harsh austerity for ten years. After achieving enlightenment, he preached for forty-two years and then attained Mahaparinirvana.

The other options are incorrect because they are not the number of years that Ajitnath Tirthankar practiced harsh austerity.