What is the difference between an incremental and iterative development approach?

A Incremental development is focused on product improvement. Iterative development is focused on development process improvement.

B An iterative approach is used for digital products, and an incremental approach is used for physical products.

C Iterative development is used when progressive elaboration is needed to clarify and refine an initial idea, concept, or vision. Incremental development is focused on delivering components of the deliverable over a period time.

D There is no difference between them. They mean the same thing