challenge: What grape varieties are used to produce Gabiano wine?
  
  A. Merlot, Cabernet Sauvignon, and Syrah
  B. Barbera, Freisa, and/or Grignolino
  C. Barbera, Chardonnay, and Pinot Grigio
  D. Sangiovese, Nebbiolo, and Dolcetto
  Answer: 