The word “cumulative” means that something builds on itself. Which example best shows how scientific knowledge is cumulative?

A. Watson and Crick worked together to come up with the model of DNA.

B. Kepler based his laws of planetary motions off of Newton’s law of gravity.

C. Hardy and Weinberg independently came up with a population equation.

D. Darwin and his grandfather both worked on the ideas of survivability.

PLEASE HELP ME