What is the theory about the giant ants in the text?

The ants were greedy animals that accumulated gold on an island in the Indian Ocean.
The ants were fooled by the Moors, who used a mare to distract them while they collected the gold.
The story of the giant ants may have originated from a comparison between the work of miners and the activity of ants.
The legend of the giant ants may have been inspired by the Siberian fox, which was believed to dig deep caves in the mountains in search of gold.