$\text { Table } 25.2$ Refer to Table 25

$\begin{array}{lr}\begin{array}{c}\text { Pool Sweeper } \\\text { Producer }\end{array} & \begin{array}{c}\text { Output } \\\text { (Revenue) }\end{array} & \begin{array}{c} \text {Market Share}\\ \text {(Percent) } \\\end{array} \\ \text { North Star } & \$ 20,000 &\underline{\quad\quad}\\\text { Hurricane } & \$ 16,000 &\underline{\quad\quad}\\\text { Blue Lagoon } & \$ 2,000 &\underline{\quad\quad}\\\text { Clean Sweep } & \$ 2,000&\underline{\quad\quad}\end{array}$

$\text { Table } 25.2$ Refer to Table 25.2.Assume there are only four firms in the pool sweeper industry.If Clean Sweep manages to increase its sales to $3,000 per week at the current price and the size of the market does not change, the combined weekly sales of the three other firms will

A) Fall by $3,000 per week.
B) Also rise.
C) Not change.
D) Fall by less than $3,000 per week.