18.Which of the following about “silent period in language learning” is NOT correct?
(A) Silent period means a period of time before the acquirer actually starts to speak.
(B) Silent period is noticeable in child second language acquisition.
(C) During silent period only some memorized or formulaic expressions may be said.
(D) During silent period L2 acquirers are building up competence via output, by speaking and writing.