Fortified wine is made by adding distilled spirits to wine during or just after fermentation. Which of the following is not a fortified wine? 

C.

Vin Santo, “holy wine” is an Italian sweet wine made from dried grapes. First the grapes (generally malvasia bianca lunga or trebbiano) are partially dried for three to six months. During the drying period, nearly half of the liquid (mostly water) in the grapes evaporates, concentrating the remaining sugar.