Why did the Chinese keep their queue?

a) The Chinese did not keep their queue; they cut it as soon as they arrived in the United States.
b) The Chinese wanted to retain their culture in the United States and refused to cut their hair.
c) The Chinese kept their queue primarily for religious reasons.
d) It was the law in China at the time that as a male, one must keep a queue, and since they were returning migrants, they had to keep it.