What is the H+ ion concentration in a 4.8 x 10⁻² M KOH solution?
A) 4.8 * 10² M
B) 1.0 x 10⁻⁷ M
C) 4.8 x 10 H1 M
D) 4.8 * 10⁻¹² M
E) 2.1x 10⁻¹³ M