What Is the OH^- Concentration of an Aqueous Solution with a PH

Multiple Choice

What is the OH^- concentration of an aqueous solution with a pH of 9.83? (K_w = 1.01 $\times$ 10^-14)

A) 1.3 $\times$ 10^-10 M
B) 6.8 $\times$ 10^-5 M
C) 6.8 $\times$ 10^-1 M
D) 1.5 $\times$ 10^-2 M
E) 7.4 $\times$ 10⁹ M