What would not be considered refactoring?

What would not be considered refactoring?
A . Extracting methods
B. Reordering method parameters to improve readability
C. Changing external interfaces or APIs
D. Renaming things to be more logical
E. Extracting interfaces

View Answer

Answer: C

Explanation:

Refactoring is only about the own code, so not about changing an external interface or api.