When society imposes limits on how many firms can pollute, this

Choose one

a.

is a choice among alternatives, since regulations decrease real incomes of the firms' owners, employees and the final consumers of the respective goods

b.

is not a choice among alternatives, since everybody wins due to decreased pollution

c.

is not a choice among alternatives for society as a whole, since the costs of decreasing pollution fall only on the firms affected by the regulation

d.

is a choice among alternatives only if some of the firms affected by the regulation go bankrupt