Suppose that one course of treatment costs $500,000. If given to patient A, it will increase life expectancy by one month; for patient B, by two months; for patient C, by three months; and for patient D, by four months.

The marginal cost per additional year of life for the patient most likely to benefit is and the marginal cost per additional year of life for the patient least likely to benefit is:

a) $6 million; $2 million

b) $1.5 million; $6 million

c) $200 million; $500,000

d) $2 million; $500,000