Why does NH₃ displace H₂O in the formation of [Cu(NH₃)₄]²+?
I. NH₃ contains more lone pairs of electrons than H₂O.
II. NH₃ is a stronger Lewis base than H₂O.
III. NH₃ donates a lone pair of electrons more readily than does H₂O.
A. I and II only
B. I and III only
C. II and III only
D. I, II, and III
