Asentenceisconsidered（）whenitdoesnotconformtothegrammaticalknowledgeinthemindofnativespeakers.

Asentenceisconsidered（）whenitdoesnotconformtothegrammaticalknowledgeinthemindofnativespeakers.
A.grammatical
B.right
C.wrong
D.ungrammatical
正确答案：ungrammatical