How is the approval order determined?

When using Advanced Approvals, a sales rep submits a Quote for Approval. On the Preview Approvals page, multiple Approval Chains display on screen from left-to-right.

How is the approval order determined?
A . The Approval Chains start the same time and are completed independent of other chains.
B. The Approval Chains are completed in the order displayed on screen.
C. The Approval Chain with the lowest Approval Step is completed first.
D. The Approval Chain with the lowest Final Approval Step value is completed first.

Answer: D