The textbook described a study by Summers 1975 which showed that after people learned to produce a sequence of keystrokes with a particular slow rhythm, they could not easily escape that rhythm when they tried to produce the same sequence as quickly as possible. The interpretation of this result offered in the textbook was that

A) The timing of a sequence of keystrokes becomes an integral part of the memory for the sequence
B) The timing of a sequence of keystrokes is independent of the memory for the sequence
C) Participants in this study suffered from response-response compatibility
D) Participants in this study benefited from response-response compatibility