Cost-effectiveness analysis has been proposed as more appropriate than cost-to-benefit analysis for evaluating healthcare services. Which of the following demonstrate its advantages?

a. It takes into account health outcomes and the cost of treatment.

b. It takes into account the cost of treatment and the cost of health outcomes.

c. It takes into account the cost of the service and the savings achieved.

d. It uses units such as years of life saved instead of dollars to measure health outcomes.