The Mechanism of Sympatric Speciation Has Been Verified in Hemp

The mechanism of sympatric speciation has been verified in hemp nettles by:

A) creating unique hybrids under laboratory conditions.
B) producing hybrids that were 98% fertile under laboratory conditions.
C) producing experimental hybrids that formed fertile offspring with the naturally occurring hybrid.
D) producing experimental hybrids that could reproduce successfully with both parent species.
E) creating hybrids that reproduced through the F₄ generation before dying from hybrid inviability.