Answer:
option (C) $5 in the U.S. and 3 euros in Italy
Explanation:
Data provided in the question:
Nominal exchange rate, E = 0.80 euros per dollar
Real exchange rate = 
Now,
Real exchange rate = [ Price of good in US ] ÷ [ Price of Good in Italy ]
= 
Here,
PU = Price of US in dollars
PI = Price of Italy in Euros
Thus,
Real exchange in rate
= 
or
= 
hence,
we get
Ratio of Price of a good in US to Price of a Good in Italy = 
or
we can say $5 in the U.S. and 3 euros in Italy
option (C) $5 in the U.S. and 3 euros in Italy