TOEFL Listening: ETS-TOEFL听力机经 - 1M9NXU89FKD2VX33P$

Why does the professor mention the artist Jan Van Eyck? A. To illustrate how dendrochronology can help establish nearly exactly when a painting was made. B. To explain why many early Nethelandish artists preferred to paint on wood panels. C. To give an example of an artist who often painted over his own work. D. To show how tree-ring data can prove that a painting was not done by a particular artist