Which of the Following (Historically Inaccurate)examples Best Demonstrates the Process

Which of the following (historically inaccurate) examples best demonstrates the process of the ratchet effect?

A) Ke$ha brushes her teeth with a bottle of whiskey,but Lady Gaga gives her a tube of toothpaste because it cleans teeth better.
B) Wolverine and Thor independently create the first hammers.Wolverine's hammer is simply a rock,whereas Thor's hammer has a metal head and a long handle.
C) Wayne Gretzky demonstrates how to use a hockey stick to shoot pucks,and everyone then tries to figure out how the stick can be used to shoot pucks.
D) Marx creates a new political ideology,Lenin builds on that ideology,and Stalin further expands on it.
E) Rafael Nadal demonstrates how to use a tennis racquet to hit a ball,and everyone mimics Rafael's movements with their racquets.