Which was the Confederacy's first ironclad vessel, built on the hull of the Union ship, USS Merrimack?

AHunley
BMonitor
CVirginia
DKearsarge

Verified Answer :

It was the CSS Virginia that was the Confederacy's first ironclad vessel, built on the hull of the Union ship, USS Merrimack, although it turned out to not be terribly useful in wartime.

answer is   C .  Virginia