Among the schools of Chinese classical gardens, the jiangnan style is dominated by private gardens and represented by () A: Suzhou B: Yangzhou C: Wuxi D: Nanjing

​Which of the following is a folk song of Jiangnan (regions south of the Yangtze River)?‎ A: Horse Pole B: Flower Tune C: Little Running River D: Orchid

There are mainly four producing areas in China, all distributed in the south: southern areas（华南茶区）, southwestern areas（西南茶区）, Jiangnan areas（江南茶区）, and ( ).