Select from the following.
A). Sediment;
B). diamonds;
C). water;
D). precious metals;
E). oil;
F). Calcium carbonate;
G). graptolites;
H). hydrogen and oxygen;
Given those answer options, answer the question: Fact 1: Vein deposits of gold and silver are formed by igneous intrusion. Fact 2: Along with gold and silver, they are known as precious or noble metals. Given the two facts above, igneous intrusion causes vein deposits of what?
A:
D).