Question

Suppose incomes double over a period of years. Which sorts of product will experience the biggest increases in price?

A Those with a PES close to 0.0 and an IED well above 0.0.
B Those with a PES close to 0.0 and an IED well below 0.0
C Those with a PES well above 1.0 and an IED well above 0.0
D Those with a PES well above 1.0 and an IED well below 0.0
E None of the above
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