18. Which of the following scenarios would result in deadweight loss? Select one or more:

a. Producing a unit that has a Marginal Social Benefit of $10, a Marginal Private Benefit of $5 and a Marginal Private Cost of $9

b. Producing a unit that has a Marginal Private Benefit of $5 and Marginal Spillover Benefit of $10 and a Marginal Private Cost of $9.

c. Producing a unit that has a Marginal Social Benefit of $12, a Marginal Private Benefit of $15 and a Marginal Private Cost of $9.

d. Producing a unit that has a Marginal Social Benefit of $4 a Marginal Private Benefit of $5 and a Marginal Private Cost of $9

e. Not producing a unit that has a Marginal Social Benefit of $8, a Marginal Private Benefit of $5 and a Marginal Private Cost of $9.

2. Suppose in a population of 100, there are 50 people have coronavirus. When testing, anyone who actually has the illness will receive a positive result. Also, 30 people receive a false positive. What percent of people who receive a positive, will NOT actually have coronavirus?