​You would expect that your firm is experiencing a constant returns to scale if

A) ​Long run average costs increase with output
B) Long run average costs decrease with output
C) Long run average costs are constant with respect to output
D) ​None of the above

Under a transferable emissions permit system,

A) the firms with the lowest marginal abatement cost curves will reduce emissions most.
B) the firms with the highest marginal abatement cost curves will reduce emissions most.
C) the firms with the lowest marginal social cost curves will reduce emissions most.
D) the firms with the highest marginal social cost curves will reduce emissions most.
E) all firms will reduce emissions equally.