What is a good defintion of Dynamic Programming?

A. Build up a solution incrementally, myopically optimizing some local criterion

B. Break up a problem into a series of overlapping subproblems, and build up solution to large and large subproblems

C. Break up a problem into independent subproblems, solve each subproblem, and combine solution to subproblems to form solution to original problem.

D. Not enough info