In what way did foot binding serve to diminish the independence of chinese women by the end of the song era?
a. because foot binding could only be afforded by the elite, poorer women were assigned to a lower social status.
b. foot binding sufficiently crippled women to effectively confine their mobility to their household.
c. foot binding, although considered socially attractive, was condemned by neo-confucians, who felt others used the practice as a means of relegating chinese women to subordinate roles.
d. chinese women whose feet were bound were unable to use stirrups.