<image>The market production and sales volume of a certain product are shown in the figure, where: l_{1} represents the annual production change of the product; l_{2} represents the sales situation of the product each year. The following statements:
(1) The production and sales volumes of the product are both rising linearly, and the original production plan can still be followed;
(2) The product has already shown a situation of supply exceeding demand, and prices will tend to fall;
(3) The product's inventory backlog will become increasingly severe, and production should be reduced or sales expanded;
(4) The production and sales situation of the product are both increasing at a certain annual growth rate.
Which do you think is more reasonable? ___ .
