Affixes attached to other morphemes to create new words are know

Affixes attached to other morphemes to create new words are known as（ ）
A、inflectional affixes
B、derivational affixes
C、bound roots
D、free morphemes
【正确答案】：B
【题目解析】：派生词缀是加在其他词素上创造新词的词缀。派生词缀还可以分为前缀和后缀。