Match the following.
A)3d 1) Sc[21] to Zn(30)
B)4d 2) La(57),Hf(72) to Hg(80)
C)5d 3) Ce(58) to Lr(103)
D) 6d 4) Y(39) to Cd(48)
5) Ac(89), Rf(104) to Cn(112)