Particles were collected in blocks of a silicon-type material called Aerogel as a space probe passed through the tail of a comet at the very edge of our solar system. Incredibly the probe then returned to Earth and scientists were able to use spectrometers and electron microscopes to identify the mineral and chemical compositions of the particles. The probe travelled almost 3 billion miles and passed within 150 miles of the comet at great speed. At that point the Aerogel was exposed and particles from the comets tail that struck it were slowed down and stopped by the gel-like material, trapping them. The Aerogel and its unique cargo then began the three-year journey back to Earth. Some of the particles are believed to pre-date the sun and to have remained unchanged in very cold deep space for all of their existence. Importantly, the sample was considered free of contaminants derived from the great planets of our solar system and the asteroid belt.

Question: Among the finds were particles that pre-dated our solar system that had not changed since their creation.
Options:
A. true, B. false, C. uncertain
Answer: "A"