The N-Back Task Is ________

The n-back task is ________.

A) an experimental paradigm where participants are shown a string of information and, while each item is presented, must complete a task related to the item presented n items earlier
B) an experimental paradigm where participants are shown a string of information and, after each item is presented, must complete a task related to the item presented n items earlier
C) a test of the capacity of the visuo-spatial sketchpad in which a string of objects is presented multiple times and the subject has to recall the object presented n-times
D) a test of long-term memory in which n denotes the length in hours or days of the delay between presentation and test