What do you create to implement a deep insert?

You develop an SAPUI5 app that updates data for sales order and sales order items on the back-end system.

What do you create to implement a deep insert? Note: There are 2 correct answers to this question.
A . A nested structure for Sales Order and Sales Order Items.
B . A fat structure with Sales Order and Sales Order Items, and then add an expand command.
C . An object structure that defines the hierarchy.
D . An individual structures for both Sales Order and Sales Order Items, and then batch them.

Answer: A, C