Sounds as if an "If" function has been inserted between answer cell and picture.
If you click on cell where "Correct" appears.
Click fX (function button above Column C) and you will see formula which should contain answer.
WPA2 hack: How secure is your Wi-Fi?
Add Depth Of Field to a photo using Tilt Shift Blur in Photoshop
iPhone tips & tricks
Les meilleures tablettes 2017