Final answer:
According to the article, the volume of wine exports from the United States to China has increased slightly despite the tariffs.
Step-by-step explanation:
According to the article, statement C is true: Despite the tariffs, the volume of wine exports from the United States to China has increased slightly.
The article mentions that China imposes higher tariffs on American exports, including agricultural products, but it does not specifically state that Chilean companies aim to improve their wine distribution in China (A), that most wine consumed in China is imported from California (B), or that only the United States has used tariffs in this trade dispute (D).