Which Statement Is True Regarding a Foreign Currency Option

Which statement is true regarding a foreign currency option?

A) A foreign currency option gives the holder the obligation to buy or sell foreign currency in the future.
B) A foreign currency option gives the holder the obligation to only sell foreign currency in the future.
C) A foreign currency option gives the holder the obligation to only buy foreign currency in the future.
D) A foreign currency option gives the holder the right but not the obligation to buy or sell foreign currency in the future.
E) A foreign currency option gives the holder the obligation to buy or sell foreign currency in the future at the spot rate on the future date.