An additional "hint" for all those taking the depth perception (floating circle) test. It is NEVER the 1st or 5th circle. The correct choice will always be either the 2nd, 3rd, or 4th circle.
In my case:
GJ - "Circle 3"
Med Tech - "ahhh"
GJ - "Circle 2"
Med Tech - "hmmm"
GJ - "Circle 4, there it is, I see it now, it's Circle 4."
GJ