Pool Line is the manufacturer of a pool cleaning system that has been called by the pool ...

Pool Line is the manufacturer of a pool cleaning system that has been called by the pool construction industry, the miracle we have waited a lifetime for. The cleaning system is very effective and recommended by all consumer magazines. The result is that 93 percent of all new pools have the system, and 94 percent of all pool owners buying replacement systems choose Pool Line. Pool Line's competitors have brought suit charging Pool Line with monopolization of the pool cleaning market. Pool Line:
 A) probably has a monopoly per se because of the 90 percent+ market share figures.
 B) probably has a valid defense of superior skill, foresight, and industry.
 C) will owe treble damages to the competitors.
 D) has probably obtained a monopoly illegally.