What should CK consider during the go-live phase to prevent usability issues?

Cloud Kicks (CK) is about to launch a public site and is expecting very high traffic in certain regions. CK will be using Content Delivery Network (CDN).

What should CK consider during the go-live phase to prevent usability issues?
A . CK should provision and activate CDN in those regions where traffic is high.
B. CK should provision CDN in those regions where traffic is high and activate CDN where traffic is low.
C. CK should provision and activate CDN in those regions where traffic is low
D. CK should provision CDN in those regions where traffic is low and activate CDN where traffic is high.

Answer: A