![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-53/ti_inject-812ce.png)
Rules of private international law may be used only when: 1) 2)
A.
The Convention itself does not directly settle a matter.
B.
The buyer and seller must have their places of business in different states.
C.
The rules of private international law must lead to the application of the law of a Contracting State
D.
The matter cannot be resolved by the application of a general principle derived from the Convention itself.