Although fullerenes, spherical molecules made entirely of carbon, were first discovered in the laboratory, they have since been found in nature, specifically in fissures of the rare mineral shungite. Because laboratory synthesis of fullerenes requires specific conditions of temperature and pressure, scientists argue that their presence in shungite provides evidence that the Earth's crust once had those same conditions when the fullerenes formed.
Which of the following, if true, would most seriously undermine the argument?
A. Confirming that the shungite genuinely contained fullerenes took careful experimentation
B. Some fullerenes have also been found on the remains of a small meteorite that collided with a spacecraft
C. The mineral shungnite itself contains large amount of carbon, from which fullerenes apparently formed
D. Shungite itself is only formed under distinctive conditions
E. Fullerenes are highly stable molecules that can persist unchanged for millions of years once formed.