Why is PM CARES Fund Not Transparent?

Why is the Prime Minister's Citizen Assistance and Relief in Emergency Situations (CARES) Fund not considered a "public authority" under the Right to Information (RTI) Act?
Interview with Anjali Bhardwaj 
Interviewed by Paranjoy Guha Thakurta Produced by Newsclick Production,

Why is the Prime Minister's Citizen Assistance and Relief in Emergency Situations (CARES) Fund not considered a "public authority" under the Right to Information (RTI) Act? Why is the PM's Office apparently reluctant to disclose where the money has come from and how it is being spent? And why was the Companies Act amended retrospectively? These are among the important questions begging answers, says social activist Anjali Bhardwaj in an interview with NewsClick.