When Thinking of a List of Digits in Terms of Racing

Multiple Choice

When thinking of a list of digits in terms of racing times, one person is found to report up to 79 digits. This suggests that this person

A) has a larger working memory than most other participants.
B) is well practiced at memory retrieval.
C) can remember this information due to a unique chunking strategy.
D) does not show the primacy or recency effect.