The right option is; B. humid subtropical
Most of eastern China have humid subtropical climate.
Humid subtropical climate is a climate known for hot and humid summers, and mild to chilly winters throughout the year. Humid subtropical climate is usually found on the southeast part of all continents, mainly between latitudes 25° and 35°. This climate also extends inland, particularly in China and the United States. Evergreen trees, shrubs, and bushes, are the main natural vegetation that can be found in Humid Subtropical areas.
