List the elements of the first transition series.

• A
  $Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn$
• B
  $Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd$
• C
  $La, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg$
• D
  $Ac, Rf, Db, Sg, Bh, Hs, Mt, Ds, Rg, Cn$