Separately calculate the rental cost per unit and the utilities cost per unit for both March and April. Identify which cost is variable and which is fixed.

Which of the following is an example of a positive externality? a. promoting generic drugs would benefit people. b. a lower inflation rate would benefit most consumers. c. compulsory flu shots for all students prevents the spread of illness in the general public. d. singapore has adopted a comprehensive savings plan for all workers known as the central provident fund.