In M. C. Mehta v. Union of India, Writ Petition No. (Civil) 13029 of 1985, road worthiness of commercial vehicles was reduced from 15 to 8 years. Under which law the Central Government has power of reducing the period of road worthiness?

A. The Air (Prevention and Control of Pollution) Act

B. The Environment Protection Act

C. The Public Liability Act

D. The Motor Vehicles Act

Answer: Option D