Explanation:

- Option 1: Wipro

- Wipro is a global information technology company based in India. It provides IT services, consulting, and business process services.

- Option 2: HCL

- HCL Technologies is another major IT services company in India. It offers services across various sectors including technology, finance, and healthcare.

- Option 3: Infosys

- UB Pravin Rao was the Chief Operating Officer of Infosys, a leading IT firm in India.

- He was appointed as the Chairman of NASSCOM in April 2020.

- Option 4: TCS

- Tata Consultancy Services (TCS) is among the top IT service providers globally and a part of India’s Tata Group.