Who were known as "carpetbaggers" and "scalawags"?

The term “carpetbaggers” refers to Northerners who moved to the South after the Civil War, during Reconstruction. Many carpetbaggers were said to have moved South for their own financial and political gains. Scalawags were white Southerners who cooperated politically with black freedmen and Northern newcomers.

so what is your question?

yup! you are correct it is b.