(a)in the case of an order of assessment of tax or levy of interest or imposition of penalty,-(i)confirm, reduce or annual the assessment of tax, or the levy of interest or imposition of penalty, if any; or(ii)enhance the assessment including any part thereof whether or not such part is the subject matter in the appeal; or(iii)set aside the assessment and direct the assessing authority to make a fresh assessment after such further enquiry as may be directed; or