An online retail company is based in the United States but ships to customers all over the world. If this company wants to serve Spanish language ads to Spanish speaking users, which targeting option should be refined

An online retail company is based in the United States but ships to customers all over the world. If this company wants to serve Spanish language ads to Spanish speaking users, which targeting option should be refined?
  A)  Language targeting
  B)  Regional targeting
  C)  Ad scheduling
  D)  Demographic targeting