Which is the best summary of Webb’s Depth of Knowledge?

A. Webb’s DOK ensures that work is cognitively demanding enough to match the way state tests are written.
B. Webb’s DOK defines the complexity of knowledge to delineate critical thinking. Its purpose is to ensure that work is cognitively demanding enough to match the standards.
C. Webb’s DOK is essentially the same as Bloom’s. This is just another way of describing rigor.
D. Webb’s DOK defines the complexity of knowledge to delineate project based learning. Its purpose is to ensure that work is cognitively demanding enough to match the standards.