The morpheme of the past tense marker-ed is pronounced as /t/ in worked, and /d/ in tried. This example shows______.

The morpheme of the past tense marker-ed is pronounced as /t/ in worked, and /d/ in tried. This example shows______.

A.morphemes are abstract units

B.morphs are actual spoken, minimal carriers of meaning

C.allomorphs are phonetically conditioned and thus predictable

D.affixes are added to other morphemes to create new words

正确答案是C