Part A: The result of a 7-day BOD test performed on a sample from an oligotrophic lake was 10 mg/1. The rate constant determined using previous studies was estimated to be 0.10d¹. Determine the ultimate BOD and 5-day BOD of the sample taken from the lake. Part B: Assume that the relevant chemical reaction in part A is as follows: Glucose(C6H12O6) reacts with oxygen to produce carbon dioxide and water. Estimate how much glucose (mg) was decomposed in the first 5 days in a water sample of 5 liters.