> Mapping in Layered Architecture

Which of the following statements regarding the mapping of functionality to a type of layer, as per the guidelines of the layered architecture is incorrect?.

1) API handlers and request-response mapping belong to the presentation layer.

2) Data storage belongs to the persistence layer.

3) The core application logic and algorithms belong to the business layer.

4) Saving and retrieving data belongs to the business layer. Please provide the right solution.