Got offer from startup and having TCS nqt exam in next week.

Hi recently got an offer from a small startup where all team members work part-time. and they hired me and assigned me a backend project (Springboot) and Python.

The problem is they don't exist on Linkedin or any social media platform cause they are just starting and now I have a TCS nqt exam next week.

if selected for ninja. what should I choose?