Which of the following is correct with respect to Rail Development Authority (RDA)?nI. The regulator will perform three primary functions—tariff determination; ensuring fair play; and setting performance standards.nII. The regulator will be headed by a chairman and will comprise of three members. III. It will have a five-year term and be empowered to engage experts.

• A. I and II
• B. II and III
• C. I and III
• D. All of the above