A publishing company determines the profit function P(x) for a new best seller, where x represents the sale price of the book.

P(x) = 48 + 12x - 0.3x2

Describe the behavior of the function on the interval (0, 40).

A.
The profit decreases when the price is between $0 and $20, and the profit increases when the price is between $20 and $40.

B.
The profit decreases when the price is between $0 and $40.

C.
The profit increases when the price is between $0 and $20, and the profit decreases when the price is between $20 and $40.

D.
The profit increases when the price is between $0 and $40.