When You Try to Remember Your 10^th Birthday Party, You

When you try to remember your 10^th birthday party, you always picture a younger version of yourself sitting around a cake with friends. However, you've recently come across some old photos of that day which reminded you that (because of a last-minute change with the day the party took place) there actually was no cake that year. What could help account for this mistake?

A) echoic error
B) schemas
C) anterograde amnesia
D) retrograde amnesia
E) autobiographical dissonance