How should UC ensure its technicians can access knowledge articles offline?

Universal containers (UC) wants to deploy knowledge to its field team.

How should UC ensure its technicians can access knowledge articles offline?
A . Use the salesforce Mobile App with deep linking to the field service lightning Mobile App.
B. Use work types to assign associated articles to work order.
C. Create a custom Mobile App that syncs articles based on service appointment assignments.
D. Write a workflow that associates articles to work orders based on a picklist on the work order.

Answer: B