Which of the following is NOT a reason for the speaker to use language clearly？

Which of the following is NOT a reason for the speaker to use language clearly？
A.A speaker’s meaning must be immediately comprehensible because listeners cannot reread an author’s words to discover their meaning.
B.A speaker’s meaning must be immediately comprehensible because listeners cannot turn to a dictionary to discover their meaning.
C.A speaker’s meaning must be immediately comprehensible because listeners are far from the speaker.
正确答案：A speaker’s meaning must be immediately comprehensible because listeners are far from the speaker.