What is the correct order steps in the ECS software installation process?

What is the correct order steps in the ECS software installation process?

1) Configure the network settings

2) Install and configure the HAL

3) Install and configure the ECS object and fabric services

4) Reinstall the core operating system
A . 1, 2, 3, 4
B . 1, 2, 4, 3
C . 1, 3, 4, 2
D . 1, 3, 2, 4

Answer: A