Which Is the Stronger Acid: H-F or H-I

Which is the stronger acid: H-F or H-I?

A) H-F, because the electronegativity of fluorine is higher than that of iodine making the H-F bond more polar and more likely to release the hydrogen ion to solution.
B) H-F, because acid strength for binary acids decreases "down the group" of the periodic table.
C) H-I, because iodine releases the hydrogen in order to form (s) at room temperature.
D) H-I, because the H-I bond is weaker and so it is easier to break to form hydrogen ions.