What Is the Main Difference Between Darwin and Wallace with Respect

Multiple Choice

What is the main difference between Darwin and Wallace with respect to their contributions to evolutionary biology?

A) Only Darwin had been a naturalist and had studied animals and plants in their natural settings.
B) Only Wallace had been a naturalist and had studied animals and plants in their natural settings.
C) Darwin presented more extensive evidence in support of evolution than Wallace.
D) Darwin developed a mathematical model of evolution.
E) Wallace developed a mathematical model of evolution.