At the most recent Mineralogical Society meeting, a member shows off her latest find! It is a non-silicate and a native element. Which of the following CANNOT be this mineral and what would be the correct reason why not?
A. NaCl – Native elements are not combined with other elements.B. Au – Native elements cannot be minerals such as gold and silver.C. SiO - Native elements are not combined with other elements.D. PbS - Native elements always contain silicon.