Consider a four-citizen community where the marginal private benefit of a public good G are:

mpb1 = 1/G

mpb2 = 2/G

mpb3 = 3/G

mpb4 = 4/G

The marginal cost of the public good is $2. Calculate the efficient level of the public good G^E. Compute the benefit-tax liabilities per unit of G for the four citizens. Illustrate.