Which bean factory post processor externalizes part of the bean configurations into a properties file

Which bean factory post processor externalizes part of the bean confi

1.	Which bean factory post processor externalizes part of the bean configurations into a properties file
A.	PropertyPlaceholderConfigurer
B.	PropertyPlaceholderRegister
C.	PropertyGetPath
D.	None of the mentioned
Answer» B. PropertyPlaceholderRegister