Right answer for Ex_2-Land_use analysis

[Ahmedhydro]

Hallo Madam/Sir,
My Name is Ahmed Mohammed from Sudan, Recently I joined WaPOR Course. According to the Python module in WaPOR, I solved the whole quizes and exercises exept the last one where I asked to provide the class of which land cover class is the largest net water consumer (negative and lowest P - ET value) after analysis I got this value (-85.207138) which corresponds to 112 (Tree cover: closed, evergreen broadleaved).

could you provide me the right answer and the steps to got it?
kindly find the dataframe I got after analysis below