The Speedy Trial Clause of the Sixth Amendment Promotes/protects Which

The speedy trial clause of the Sixth Amendment promotes/protects which of the following interests?
I. prevents prolonged detention prior to trial
II. guards against weakening the defense's case
III. reaching the correct result in individual cases
IV. organizational interests in efficiency and economy

A) I, II, III, IV
B) I, II, III
C) I, III, IV
D) I, IV