Answer:
B) the dollar trading at a 8% premium to the Swiss franc for delivery in 180 days.
Explanation:
The spot rate is the current exchange rate, SF1.25/$, means that you need 1.25 Swiss francs to purchase 1 US dollar.
The forward rate is the exchange rate in 180 days (6 months), SF1.30/$, means that in 6 months you will need 1.30 Swiss francs to purchase 1 US dollar.
The forward premium refers to the difference between a higher future exchange rate (forward) and a lower current exchange rate (spot). In this case, the forward premium = SF1.30/$ - SF1.25/$ = SF0.05/$
Since the dollar is appreciating against the Swiss franc, the forward premium = SF0.05 / SF1.25 = 0.04 or 4% for 6 months x 2 = 8% premium for the year