kb1 of n2h4 is 4?10^-6 .Then what is the dissociation constant of N2H5+ and N2H62+ respectively

A-1. ${\mathrm{K}}_{{\mathrm{b}}_1}$ of N₂H₄ is 4 × 10^–6. Then what is the acid dissociation constant of N₂H₅ ⁺ and N₂H₆ ²⁺ respectively?
(A) data insufficient, 4 × 10^–6
(B) data insufficient, 2.5 × 10^–8
(C) 2.5 × 10^–9, data insufficient
(D) 2.5 × 10^–9, 4 × 10^–6