Which three components of a recipe are optional when configuring a new algorithm?

When configuring a new recipe algorithm, the following components are optional:

Boosters (Answer D):

Allows prioritizing specific items based on business goals, such as promoting higher-margin products.

Exclusions (Answer E):

Filters out certain items or categories from being recommended.

Variation (Answer C):

Enables A/B testing by creating multiple variations of a recipe to optimize performance.