KHS Can Act as a Weak Acid or a Weak

Multiple Choice

KHS can act as a weak acid or a weak base.
HS^-(aq) + H₂O(l) S^2-(aq) + H₃O⁺(aq)   K_a2 = 1.3 x 10^-13
HS^-(aq) + H₂O(l) H₂S(aq) + OH^-(aq)   K_b2 = 1.0 x 10^-7
Which of the following statements is correct?

A) A solution of 0.1 M K₂S and 0.1 M KHS will be acidic.
B) A solution of 0.01 M H₂S will have a pH = 2.
C) A solution of 0.1 M KHS will be weakly basic.
D) H₂S is over 90% ionized in water solution.
E) The S^2- ion concentration in a 0.1 M KHS solution does not depend on pH.