Treasury Interview

I have an interview with Citibank’s treasury div. Could any of u guys pls answer these questions for me. I have a fair idea abt them but would like to know more. 1. Relationship of foreign exchange rates & bullion market 2. Relationship of foreign exchange & crude oil prices 3. Major factors determining crude oil prices 4. Sub prime lending

What currency pairs? USD/CAD I assume?

I basically wanted to know a relation irrespective of what currency it was. As in bullion is generally used as a hedge against inflation n hence how would it impact the exchnage rate in an inflationary market or an emerging market like India.