As Kayla Was Introduced to the Seven Members of the Committee

As Kayla was introduced to the seven members of the committee who would be interviewing her for a scholarship, she silently repeated all the names to herself, in order. Which of the following was Kayla using, and why?

A) chunking to increase the capacity of her short-term memory
B) filtering to temporarily block other information out of short-term memory
C) acoustic encoding to process the names semantically
D) rehearsal to temporarily store the names in short-term memory