Which one is incorrect about the supply function, Of = 12 2P, where P, indicates a price of good x. A. 12 can be interpreted as the baseline supply regardless of price of good X. B. If the price of good x increases from $1 to $3, it results in an increase in supplies from 14 to 18. C. If some factors other than the price of good X change, we need to evaluate this change by shitting the supply curve. D. The supply function indicates that firms are currently enjoying economies of scale