An alloy of copper, silver, and gold is found to have copper constituting the CCP lattice. Silver atoms occupy the edge centers, and gold is present at the body center. However, copper atom occupy face center and one copper atom is missing from the face center of the unit cell. Determine the formula of the alloy.
1
\(\text{Cu}_{10} \text{Ag}_{6} \text{Au}_{2}\)
2
\(\text{Cu}_{10} \text{Ag}_{6} \text{Au}_{1}\)
3
\(\text{Cu}_{10} \text{Ag}_{3} \text{Au}_{2}\)
4
\(\text{Cu}_{5} \text{Ag}_{6} \text{Au}_{2}\)