Final answer:
The population of the Jin regime at the time Genghis Khan captured it was not between 100 million to 150 million.
Step-by-step explanation:
The statement that the population of the Jin regime at the time Genghis Khan captured it was between 100 million to 150 million is false. According to historical records, the population of Kaifeng, the Jin capital, when it finally fell to the Mongols was about 1.4 million. This population figure was arrived at after accounting for various factors such as an epidemic, refugees, and new arrivals.