A 001 M Solution of a Weak Base Has a Percent

A 0.01 M solution of a weak base has a percent association of 18.32%.Calculate the K_b for the weak base.

A) 1) 83 × 10⁻³
B) 2) 43 × 10 ⁻¹¹
C) 5) 46 × 10⁻¹²
D) 4) 11 × 10⁻⁴
E) 1) 22 × 10⁻¹²