问题：
[单选题]According to what you have learned in the course, which one is NOT one of the various sayings concerning the origin of Chinese characters?
A"Picture theory"
B"Eight Trigrams"
C"Totem"
DThe legendary story about Cang Jie
[单选题]According to what you have learned in the course, which one is NOT one of the various sayings concerning the origin of Chinese characters?
A"Picture theory"
B"Eight Trigrams"
C"Totem"
DThe legendary story about Cang Jie
