The correct option is A Harsh steps on the peasants who had seized lands.
A section of people among the Whites, who supported private property, took harsh steps on the peasants who had seized lands. These actions taken by the Whites made the non-Bolsheviks side of the civil war lose support. The peasants flocked towards the side of the Bolsheviks. By January 1920, the Bolsheviks controlled most of the former Russian empire with the help of Muslim jadidists and non-Russian nationalists.