The correct option is A.
Both the Merrimack and the Monitor were new warships built for the Civil War.
What were both the Merrimack and the Monitor?
Monitor and Merrimack, two American warships that fought the first engagement between ironclad ships. When, at the beginning of the Civil War, the Union forces abandoned the Norfolk Navy Yard at Portsmouth, they scuttled the powerful steam frigate Merrimack.
What was the Merrimack vs Monitor?
Battle of the Monitor and Merrimack, also called Battle of Hampton Roads, (March 9, 1862), in the American Civil War, naval engagement at Hampton Roads, a harbor at the mouth of the James River, notable as history's first duel between ironclad warships and the beginning of a new era of naval warfare.
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