Given the Equilibrium Constants for the Following Reactions:
4Cu(s) $\rightleftharpoons$

Given the equilibrium constants for the following reactions:
4Cu(s) + O₂(g) $\rightleftharpoons$ 2Cu₂O(s) , K₁
4CuO(s) $\rightleftharpoons$ 2Cu₂O(s) + O₂(g) , K₂
What is K for the system
2Cu(s) + O₂(g) $\rightleftharpoons$ 2CuO(s)
Equivalent to?

A) $\left( K _ { 1 } \right) ^ { 1 / 2 } / \left( K _ { 2 } \right)$ $\left[ \left( K _ { 1 } \right) / \left( K _ { 2 } \right) \right] ^ { 1 / 2 }$
B) $\left( K _ { 2 } \right) \left( K _ { 1 } \right) ^ { 1 / 2 }$
C) (K₁) (K₂)
D) $\left( K _ { 2 } \right) ^ { 1 / 2 } / \left( K _ { 1 } \right)$ $\left[ \left( K _ { 2 } \right) / \left( K _ { 1 } \right) \right] ^ { 1 / 2 }$
E) $\left( K _ { 1 } \right) \left( K _ { 2 } \right) ^ { 1 / 2 }$