What was the result of commerce raiding by the cruiser css shenandoah?

During  12 1⁄2 months of 1864–1865 the ship undertook commerce raiding resulting in the capture and sinking or bonding of thirty-eight Union merchant vessels, mostly New Bedford whaleships. The Shenandoah fired the last shot of the American Civil War, across the bow of a whaler in waters off the Aleutian Islands.

This answer would be c