In the "Card Magic" Demonstration,after You Focused on One Card

Multiple Choice

In the "Card Magic" demonstration,after you focused on one card out of the six,you were then shown six more cards,and your card seemed to disappear.What had actually occurred?

A) Most people tend to focus on the middle card, and this one was the one that seemed to disappear.
B) Most people tend to focus on the second card, and this one was the one that seemed to disappear.
C) Most people focus so intently on their choice that they did not notice that all five cards in the second presentation were new.
D) A quick loss of memory has occurred verifying Ebbinghaus' curve of forgetting.