Patricia Is a Defense Attorney

Patricia is a defense attorney. Her job requires her to confront witnesses about the limits of their memory capabilities. In addition, as a defense attorney Patricia is motivated to make the witnesses "slip-up" or even distort their memories of the events her client is being accused of.
-Patricia often brings up the concept of transience in court to discredit the memory of an eyewitness.This concept refers to _________ and is a memory sin of _________.

A) failure to retrieve an item from memory; commission
B) the simple decay of memory over time; commission
C) failure to retrieve an item from memory; omission
D) the simple decay of memory over time; omission