Smoking cigarettes is a leading cause of many diseases. The government has opened several public clinics that treat smoking-related diseases and is trying to decide how to fund these clinics. One suggestion is to raise the funds by imposing a tax on expensive cars and yachts. This tax follows .
A. The ability-to-pay principle
B. Neither the ability-to-pay principle nor the benefits principles
C. Both the ability-to-pay and benefits principles
D. The benefits principle