Your question is Android Architecture and DI. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Explain why you used a repository layer, and whether you can call an API directly from a ViewModel in a Paytm mobile app; also describe how you handle configuration changes and prevent memory leaks using dependency injection.