Which of the Following About the Warring States Period in China

Which of the following about the Warring States period in China is correct?

A) Social relations became more fluid as commoners were able to gain more economic power.
B) Bureaucratic officials were replaced with loyal family members.
C) Peasants were permitted to travel broadly in order to obtain the best price for their crops.
D) Gender relations became more flexible as the economic value of women increased due to their work in the fields.