Recall the Application About How to Wash Carbon Out of the Air

Multiple Choice

Recall the Application about how to wash carbon out of the air to answer the following question(s) .
-Recall the Application. Assume a firm that produces CO2 has a marginal cost of abatement of $90 per ton and faces a carbon tax of $70 per ton. If the cost of carbon washing is $50 per ton, the firm could save ________ per ton and emit ________ carbon into the atmosphere by using a carbon washing machine.

A) $40; less
B) $40; more
C) $20; less
D) $20; more