Which sentence is punctuated correctly? A. Three western cities I would like to visit are San Francisco, California, Portland, Oregon, and Seattle, Washington. B. Three western cities I would like to visit are San Francisco; California, Portland; Oregon, and Seattle; Washington. C. Three western cities I would like to visit are San Francisco, California; Portland, Oregon; and Seattle, Washington. D. Three western cities I would like to visit are San Francisco California, Portland Oregon, and Seattle Washington.