Which of These Statements Is NOT True About the Qing

Which of these statements is NOT true about the Qing Dynasty masterpiece Yu the Great Taming the Waters?

A) It is carved into the largest piece of marble ever quarried.
B) It is a remarkable example of high-relief sculpture.
C) Its subject matter is the story of a mythical emperor who tamed a catastrophic flood in the 2^nd millennium BCE.
D) Its subject matter is the story of the unification of China under Shih Huang-Ti in the 3^rd century BCE.