Consider the Following Equilibrium Reaction

Consider the following equilibrium reaction:
NH₃+ H₂ O NH ₄+ + OH - K b (NH ₃) = 1.8 10 - 5 Qualitatively, what is the effect of adding NaOH to an aqueous solution of NH₃as shown in the equilibrium reaction above?
(Use Le Chatelier s principle.)

A) The equilibrium will shift left favoring the reactant side and the pH will drop.
B) The equilibrium will shift right favoring the product side and the pH will drop.
C) There will be no shift in the equilibrium reaction and the pH will remain constant.
D) The equilibrium will shift left favoring the reactant side and the pH will rise.
E) The equilibrium will shift right favoring the product side and the pH will rise.