What happens if the ui.json file is empty?

What happens if the ui.json file is empty?
A . You create a text-only version of an app.
B . The template will not include a configuration wizard.
C . The dataflow fails.
D . The app includes all possible dashboards by default.
E . B and D

Answer: B

Explanation:

https://trailhead.salesforce.com/en/content/learn/modules/wave_analytics_templates_intro/wave_analytics_templates_structure