For her 4th year thesis project, Jess wants to determine the optimal settings on her lab's LC-MS for reproducibly measuring cannabis THC concentrations. The instrument has 2 settings (A and B) with 3 different levels (low, medium, high), and 3 settings (C, D and E) with 2 different levels (on and off). Each sample analysis takes 30 minutes. How many hours does Jess need if she wants to analyze her sample at every possible combination of settings and levels, in triplicate? O 100 hours O 54 hours 108 hours O 79 hours