In a Study on Working Memory, One Group of Participants

In a study on working memory, one group of participants repeated a sound, thereby blocking acoustic coding for other material. This research showed that

A) working memory disappeared completely.
B) when acoustic coding was blocked, people often used visual coding.
C) acoustic coding was even more likely in long-term memory than in working memory.
D) semantic coding was the dominant mode in working memory, whereas acoustic coding was more likely in long-term memory.