For Questions 20-23, refer to the following script:

Tim Gane works as the sole accountant at Stereolab, Inc., a startup technology company which sells high-end audio and visual equipment used by musicians. The company was founded in 2017, and during that first year recorded $100,000 in sales revenue. At the end of 2017, Tim performed analytics that were used to estimate sales of a new speaker system (Product L.O.U.D.) the company planned to start selling in 2018. Unfortunately, sales of L.O.U.D. flopped throughout 2018, and at the end of 2018 Tim was tasked with performing analytics to diagnose why L.O.U.D. sales were poor and how its sales could be improved moving forward. Thankfully, 2019 was a much more successful year as sales of not only L.O.U.D. increased but all products. When conducting all analytics, Tim had to access databases separately to obtain all of the data he needed. Because Stereolabs sales revenue increased from $200,000 in 2018 to $1,150,000 in 2019, Tim upgraded his version of QuickBooks.

Which type of data analytics did Tim perform at the end of 2018?

Select one:

a. Prescriptive

b. Predictive

c. Descriptive

d. Both A and C