What is one way to edit the following sentence for punctuation?

I traveled to Portland, Oregon, Seattle, Washington, and Austin, Texas.
Select one:

A ] I traveled to: Portland, Oregon, Seattle, Washington, and Austin, Texas.

B ] I traveled to Portland, Oregon; Seattle, Washington; and Austin, Texas.

C ] I traveled to Portland, Oregon: Seattle, Washington: and Austin, Texas.

D ] I traveled to Portland Oregon, Seattle Washington, and Austin Texas.