Which of the following statements about “metaphor” and “symbol” is NOT TRUE?

Which of the following statements about “metaphor” and “symbol” is NOT TRUE?
A.Metaphor always establishes a one-to-one correspondence.
B.Metaphor is an implicit form of comparisons between two things.
C.Symbol is arbitrary.
D.A symbol always has many meanings.
正确答案：A symbol always has many meanings.