git be relevant. Suppose a public insurer only uses economic evaluation to decide whether or not a drug should be funded. Which of the following statements is correct? Select one: O a. The cost per QALY is the same for a given treatment regardless of patient heterogeneity. O b. Patient heterogeneity means that in some groups of patients the drug is very effective and the cost-effectiveness ratio is acceptable, while in other patients this is not the case. O c. Patient heterogeneity makes it recommendable to include in the funding of the public insurance all drugs with a cost per QALY higher than 0. O d. Patient heterogeneity can never affect the results of an economic evaluation