Some answer keys are below as it is not announced by the official website then you can refer below channel of Youtube link which I have given

https://www.youtube.com/watch?v=0lmrFuPnjek

https://drive.google.com/file/d/1kxhKntjzp66ObZH9fj9WADFqjQ-JiOT9/preview

https://drive.google.com/file/d/1BVRZegl1vDFUmQu__gOKhh8Y0W6q3hL4/preview