HURRY!

Both the Merrimack and the Monitor were

A. new warships built for the Civil War.

B. new warships built by the Union

C. supply ships used by both sides in port cities.

D. Confederate ships used against the Union.

A. new warships built for the Civil War

Option# A: New warships built for the Civil War.

Explanation:

The Monitor and Merrimack were two warships built around 1860s to be used in the naval warfare of the American Civil War. The battle took place at a harbour in James River at Hampton Roads, Virginia. It was the history's first duel between warships and the event is still recalled as The Battle of Hampton Roads or Battle of the Monitor and Merrimack.

Hence, Option# A is correct.