Which of the Following Isn't True for the H₃O⁺ Ion

Which of the following isn't true for the H₃O⁺ ion concentration in a
0) 0100 M solution of acetic acid (K_a = 1.8 x 10^-5) ?

A) It is less than the H₃O⁺ concentration in an 0.0100 M solution of HCl.
B) It is equal to the OAc^- ion concentration.
C) It is equal to the OH^- ion concentration.
D) The pH of the solution is less than 7.0.
E) None of the above are true.