Noah Learned to Play Mozart's Concerto Number 21 When He

Multiple Choice

Noah learned to play Mozart's Concerto Number 21 when he was 8 years old.He is now 30 years old and hasn't played the piano for years,but his sister has asked him to play the concerto at her wedding.When Noah sits down to practise,he finds that he has the piece mastered in just a few hours,even though it took him weeks to learn the first time.What does this example illustrate

A)  cancellation of retroactive interference 
B)  relearning as a measure of memory retention 
C)  impact of pseudoforgetting 
D)  ease of recall for auditory stimuli