Write the conjugate acids for the following Bronsted bases: $NH_{2}^{-}$,$NH_{3}$ and $HCOO^{-}$

• A
  $NH_{3}$,$NH_{4}^{+}$,$HCOOH$
• B
  $NH_{3}$,$NH_{4}^{+}$,$HCOO^{-}$
• C
  $NH_{2}$,$NH_{4}^{+}$,$HCOOH$
• D
  $NH_{3}$,$NH_{4}^{+}$,$HCOO_{2}^{-}$