Count only the rules allowed by the scenario
Scenario. A cafeteria records a meal category and whether the meal contains meat or dairy. Use the category supplied by the cafeteria; do not try to infer the category from the ingredients.
The cafeteria allows these combinations:
- A
Standardmeal may contain meat or not and may contain dairy or not. - A
Vegetarianmeal contains no meat but may contain dairy. - A
Veganmeal contains neither meat nor dairy.
A raw combination allowed by these requirements is a feasible case. How many feasible cases are there?
- 4 cases
- 7 cases
- 9 cases
- 12 cases