Suppose Dexter and Amy are the only members of a community that is trying to determine how much of the public good should be produced. Dexter's (inverse) demand curve is given byP= 50 - 5Q, while Amy's (inverse) demand curve is given byP= 150 - 15Q, wherePis price or marginal benefit andQis the quantity of the good. The marginal cost of producing the public good is constant at $80. Amy will vote for the efficient quantity of the public good if the price to her is:

Group of answer choices

$20.

$40.

$60.

$80.