According to Billington, Yin and Yang Can Best Be Understood

According to Billington, yin and yang can best be understood as

A) the force of evil and the force of good, which alternately control the affairs of the heavens, earth, and humanity.
B) an inferior force and a superior force, which the Taoists equated with femininity and masculinity.
C) opposite forces or things, like cold and heat or dark and light, which cannot exist without the other.
D) the two main gods of the Taoist religion, which alternate during night and day, winter and summer, and so on.