What is the Law of Accelerating Returns?

A - The concept that the more work a person puts into a project, the faster the technological discoveries occur
B - The theory that states that as order increases exponentially, the time between major discoveries grow shorter
C - The belief that computers will eventually outpace humans in intelligence
D - The idea that humans cannot build new concepts as fast as computers can

I tried researching this question but I couldn't get a direct answer and everything just confused me. Please help!