"Line-Of-Sight Ambiguity" Refers to

"Line-of-sight ambiguity" refers to

A) how accurately we perceive the relative distances of objects when they are aligned along our line of sight
B) whether we can tell if one object is in front of another when they are aligned along our line of sight
C) whether we can tell if one object is above another when they are at different distances
D) none of the above