GMAT Prep 一题请教

4。Although fullerenes-spherical molecules made entirely of carbon-were first found in the laboratory, they have since been found in nature, formed in fissures of the rare mineral shungite. Since laboratory synthesis of fullerenes requires distinctive conditions of temperature and pressure, this discovery should give geologists a tess case for evaluating hypotheses about the state of the Earth's crust at the time these naturally occurring fullerenes were formed.
Which of the following, if true, most seriously undermines the argument?

-  Some fullerenes have also been found on the remains of a small meterite that collided with a spacecraft (I chose this one, why now? I think it's 他因)
- The naturally occurring fullerenes are arranged in a previously unknown crystalline structure