Question: Three Nationwide Plaza is a 408 ft(124m) postmodern highrise building located at the address 3 Nationwide Plaza in Downtown Columbus, Nationwide Plaza is the headquarters of Nationwide Mutual Insurance Company, and affiliated companies, are a group of large U.S. insurance and financial services companies based in Columbus in which US state (acronym)?
Sentence (from "Nationwide Mutual Insurance Company"): The company also operates regional headquarters in Des Moines, IA; San Antonio, TX; Gainesville, FL; Raleigh, NC; and Westerville, OH.
Relevant evidence: No