Please answer the following question: Fact 1: Vein deposits of gold and silver are formed by igneous intrusion. Fact 2: Gold and silver are valuable products. Given the two facts above, answer the question "What does igneous intrusion create?" with the following options: - adding heat - loose soil - heat energy - Valuable products - hydrogen and oxygen - earthquakes - graptolites - objects that have mass
A:
Valuable products