Answer:
The correct option is D.
Explanation:
In a perfectly competitive market, there are many sellers selling the same product and in this market, firms have easy entry and exit, products are identical in nature from one seller to another and also the sellers are price taker.
So, in this case, ABC firm compete in this market for milk but later on they changed their production to produce organic milk and this change would be described by the effect that ABC firm is differentiating its product from market and they will have a chance to charge high price than earlier.
Therefore, the correct option is D.
it would be a to d, c to b, d to e
