During the phaseout schedule for CFCs, firms had the potential to earn abnormally high profits from production of CFCs due to ___________ potentially creating a disincentive to develop CFC substitutes. This potential to earn abnormally high profits from production of CFCs was mitigated by _____ the excise tax on CFCs; the large number of allowances the excise tax on CFCs; the small number of allowances the large number of allowances, the excise tax on CFCs the small number of allowances; the excise tax on CFCs marginal social cost at the efficient quantity
