Context: Figure: Taklamakan Desert.
The Taklamakan Desert is a cold desert ecosystem in northwestern China. Towns in this desert were stops along the Silk Road, a historical trade route between China and eastern Europe.
Which statement describes the Taklamakan Desert ecosystem?
A. It has warm summers and mild winters.
B. It has dry, thin soil.
From the given choices, pick the correct answer and respond by indicating the letter of the correct option.

B