<spoiler-alert>They made a silly mistake on their question 13 (Geant4 and V517) implementation. Even though I clicked on the second sC0Min1Max, they marked my answer as incorrect -- it should be correct whether the first sC0Min1Max or the second sC0Min1Max is clicked.</spoiler-alert>
Let's simplify the code to make the error more obvious:
if (a & Min_Max) { Min[0] Min[1] }
else if (a & Max_Min) { Max[0] Min[1] }
else if (a & Max_Max) { Max[0] Max[1] }
else if (a & Min_Max) { Min[0] Max[1] }
It should be evident now that every line except the first one contains the correlation between names of constants and names of arrays. So, in the first expression the 'sC0Min1Min' should have been used instead.
