Millcorp sells wetsuits for deep sea divers. It recently engineered a new material for its wetsuits to better hold in the wearer's body heat. After a close encounter with a shark, a customer discovers that the new material protects against shark bites - an unintended benefit that Millcorp was not aware of. Soon after, Millcorp's sales explode and it achieves 90% market share in diver wetsuits. Which of the following best describes this situation?

• Millcorp can likely be found guilty of pursuing monopoly power.
• Millcorp does not have a monopoly.
• Millcorp has a lawful natural monopoly
• Millcorp has a lawful innocent acquisition of a monopoly.