Which Statements Are True About the Following Reaction?
PF₅ $\rarr$ H⁺ + PF₆^-
I

Which statements are true about the following reaction?
PF₅ + HF $\rarr$ H⁺ + PF₆^-
I. HF is a Brønsted acid and a Lewis acid.
II. PF₅ is the Lewis acid.
III. The F^- ion is the Lewis base.
IV. The orbital used in bonding is a dsp³ hybrid orbital.
V. PF₆^-is a Lewis acid.

A) I and V
B) II and III
C) I, III and IV
D) III and V
E) I and III