In what sequence should the developer perform the tasks, so that the custom Site displays the products as intended?

Given the following conditions:

Site export file with a copy of the Storefront data for a custom site

Sandbox with the custom site code, but no Storefront data

Requirement for a working copy of SFRA for development reference

A developer is assigned the following Business manager tasks:

A) Import the custom Site using Site Import/Export

B) Import the SFRA Demo Sites using Site Import/Export

C) Rebuild the custom Site search indexes

In what sequence should the developer perform the tasks, so that the custom Site displays the products as intended?
A . Task A, then C, then B
B. Task B, then C, then A
C. Task A, then B, then C
D. Task B, then A, then C