Which statement accurately explains the roles carpetbaggers and scalawags played in Reconstruction?

• Carpetbaggers were Southerners who supported Reconstruction, while scalawags were Northerners who came to the South to oppose it.
• Carpetbaggers were Southerners who supported Reconstruction, while scalawags were Northerners who did not support Reconstruction.

Carpetbaggers were Northerners who came to the South and supported Reconstruction, while scalawags were Southerners who worked against them.
• Carpetbaggers were Northerners who came to the South and supported Reconstruction, while scalawags were Southerners who welcomed them.

• Carpetbaggers were Northerners who came to the South and supported Reconstruction, while scalawags were Southerners who also supported Reconstruction and cooperated with the carpetbaggers.