GMAT Critical Reasoning (CR) | Re: During the earliest period of industrialization in Britain, steam engi

I am facing difficulty understanding how OA resolves the paradox and following are my issues in it..

Universal Fact:On one piece of land, we can construct only one kind of factory - Wind/Water power or Steam Powered.
Premise 1: Steam Powered Factories were built in large numbers even though they were more expensive to construct and operate.
Premise 2: Steam Powered Factories were built Even on the land on which Wind/Water Powered factories could be constructed.

Now,