Considering the cultural context of ancient Israel, what was the primary social significance of 'gleaning' as instructed in Leviticus 19:9-10 and Deuteronomy 24:19-22?

A It was a method for landowners to increase their overall crop yield by ensuring every last piece of grain was harvested. B It was a charitable provision designed to support the poor, widows, and orphans, offering them a means of sustenance and social inclusion. C It was a legal requirement imposed by the ruling authorities to maintain social order and prevent peasant uprisings. D It served primarily as a religious ritual to appease the gods and ensure a bountiful harvest in the following season.