What does Katherine intend to tell her students by talking about Vincent van Gogh in her lecture?
选项：

A:Vincent van Gogh was so progressive that people of his time couldn’t understand him and his paintings.;
B:Everyone can be Vincent van Gogh if they follow the simple instructions.;
C:Choices are in one’s own hands – he can be himself or conform to others’expectations.;
D:The paintings of Vincent van Gogh are available to the masses now due to the emergence of reproduction technology.