Where is all that milk coming from?

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In an interview this morning, I was presented with the following multiple choice question...

Of the following, where is the most milk produced?

New Zealand

United States

India

European Union

Give us your best guess by participating in the poll at the top left corner of this page. The poll will close on April 4th, and the answer will be revealed.

This strictly refers to total milk production, not per cow production... No help from Google, please guess/answer on your own!