All of the Following Are True for the Measurement of Standard

Multiple Choice

All of the following are true for the measurement of standard reduction potentials,except:
I standard conditions for reduction potentials is 25 ^oC and A = 1 for all aqueous and gaseous species.
II reduction potentials are measured relative to the standard hydrogen electrode (S.H.E. ) .
III standard reduction potentials are measured while connected to the negative electrode of the potentiometer.
IV the E^° for the S.H.E.is defined as 0 volts.

A) I and IV
B) I and III
C) I only
D) III only
E) II and IV