If Interest Rate parity holds, which of the following implications is/are true?

Nominal interest rate differential will approximate forward premium (discount) between two currencies exchange rates between domestic and foreign currencies

Funds with lower expected costs are possible but these carry exposure to currency risk.

Investments with higher expected returns are possible but these entail currency exposure.

Forward exchange rate will be an unbiased predictor of future spot rate.

Spot exchange rates will change in accordance with the differences in nominal interest rates between countries.