What change, if any, is necessary in the underlined portion in the
following passage?
During the Civil War, there were several areas of the South that
remained staunchly pro-Union and refused to join the
Confederacy. Scott County in northeastern Tennessee was one
such holdout.
A.were several areas of the South that remained staunchly pro-Union and
refused to join the Confederacy. Scott County in northeastern Tennessee
is
B.had been several areas of the South that remained staunchly pro-Union
and refused to join the Confederacy Scott County in northeastern
Tennessee was
C.have been several areas of the South that remained staunchly pro-Union
and refused to join the Confederacy. Scott County in northeastern
Tennessee was
D.correct as is