Comparing Design Strengths Practice Test

Keisha and Carlos read the funnel results. Design A (wide opening) spilled 2 tablespoons. Design B (narrow opening) spilled 5 tablespoons. They say a weakness is what doesn't work well, shown by more spilling. They connect the narrow opening to missing the cup. From the testing, what weakness did Design B show?

Yuki and Carlos look at shelf tests for storing books. Design A (one shelf): holds 8 books. Design B (three shelves): holds 24 books. They say more books held means it works well for storage. Based on the data, which design holds more books?