Under foreign exchange risk measurement, economic risk emerges out of which of the following?
1. Riskiness of company's foreign exchange positions resulting from its business activities.
2. The holding period or length of time over which the foreign exchange position is planned to be held.
3. A change in the present value of the future after tax cash flows due to changes in exchange rates.
4. The unit of currency to be used for the denomination of the value of currency.