@kokate Great catch! You are absolutely right. I have updated this question and answers/explanations appropriately. Thank you so much for bringing this to our attention. FYI - I did remove the IBC screenshot from your post, as we do not allow copyrighted material to be shared here.
If you have any further questions or want to share your thoughts about the exercise, I recommend that you comment on the dedicated post here: PPD | Determining Occupancy, Building Massing, and Construction Types [Exercise A]
We have dedicated posts for each Real-World Practice exercise so that you can engage in valuable discussions with architects and peers. You can find the dedicated thread by clicking on the Discuss in the Community button when reviewing answer feedback for the exercise.
Happy studying!
Kiara Galicinao, AIA, NCARB
Product Coordinator
Black Spectacles