Answer: d. All of the above
Step-by-step explanation:
The Rocky Mountain Fur Company was founded by William Henry Ashley and Andrew Henry in 1822 to get beaver fur and they were so good at western exploration that they inspired folklore some of which were inspired by their rivalries with other fur companies such as the Hudson's Bay Company.
They were divided into engages, skin trappers and free trappers which was the division that the famous Joe Meek and Kit Carson were part of. They had to shut down over a decade later however when their business model was no longer sustainable.