Which of the Following Aqueous Solutions Is(are) Considered Basic

Multiple Choice

Which of the following aqueous solutions is(are) considered basic ?
I. [H₃O⁺] = 5.4×10 ^{- 8} M
II. pOH = 9.0
III. [OH ^- ] = 4.3×10 ^{- 4}

A) I only
B) I and II
C) I and III
D) II and III
E) All of these