Derivational affixes are bound morphemes added to existing form to construct new words. English derivational affixes are divided into（）and（）.

Derivational affixes are bound morphemes added to existing form to construct new words. English derivational affixes are divided into（）and（）.
A.prefixes, infixes
B.suffixes and infixes
C.prefixes, suffixes
D.morphemes, allomorphs
正确答案：prefixes, suffixes