The correct answer is B. I’m both regions, the Mongols allowed native leaders to serve in administrative positions.
In both Persia and Russia, the Mongols had a regional governor, and to help them they recruited staff among the local population, they usually recruited people that came from lettered families and by hereditary basis. Historians have pointed out that Russians were trained by the Mongols to take orders, to pay taxes and to supply soldiers without delay, future czars also used the same techniques later on.
This caused the population to feel “part of the power” and this way they would be against a revolt for example. It was also a way of being closer to the population by taking some of them to work with the new “government”.