A public health department is considering five alternative programs to encourage parents to have their preschool children vaccinated against a communicable disease. The following table shows the cost and number of vaccinations predicted for each program. Program Cost Number of Vaccinations A $ 20,000.00 2000 B $ 44,000.00 4000 C $ 72,000.00 6000 D $ 112,000.00 8000 E $ 150,000.00 10000 a. Ignoring issues of scale, which program is most cost-effective?b. Assuming that the public health department wishes to vaccinate at least 5,000 children, which program is most cost-effective? c. If the health department believes that each vaccination provides social benefits equal to $20, then which program should it adopt?