How does the Spring JDBC framework know that state 23505 should be mapped to DuplicateKeyException?

How does the Spring JDBC framework know that state 23505 should be map

1.	How does the Spring JDBC framework know that state 23505 should be mapped to DuplicateKeyException?
A.	error code
B.	SQL state
C.	all of the mentioned
D.	none of the mentioned
Answer» D. none of the mentioned