3. The year is 2022 and thankfully an effective and safe vaccine has been discovered, produced and administered to a sufficient proportion of the world's population so as to effectively eliminate Covid-19 and allow international traffic to return to pre-2020 levels. Prudence is going to Paris next year (that is, 2023) to study. As she is careful and likes to plan ahead, in order to protect herself from exchange rate fluctuations, she bought a futures contract for the number of euros she plans to spend next year, at the current euro/dollar exchange rate. When she arrives in Paris, she can cash in her contract for this many euros no matter what the exchange rate is. If the value of the euro relative to the dollar should happen to fall before she gets to Paris, she (a) will be at least as well off and probably better off than if the exchange had not changed. (b) will be worse off than if the exchange rate hadn't changed. (c) will be exactly as well off as if the exchange hadn't changed. (d) might be better off or she might be worse off, depending on whether she plans to spend more or less than she does at home