Upon consideration of the criteria enumerated in section 29-2322, the appellate court shall: (1) If it determines that the sentence imposed is excessively lenient, set aside the sentence, and: (a) Remand the case for imposition of a greater sentence; (b) Remand the case for further sentencing proceedings; or (c) Impose a greater sentence; or (2) If it determines that the sentence imposed is not excessively lenient, affirm the sentence.