Valence bond theory explained geometries of complexes with the help of hybridization concept.Which one of the following is a diamagnetic, inner orbital complex according to VBT

Co(Z=27)..[Ar]4s23d7 Co+3.....[Ar]3d6Fe(Z=26) . . [Ar]4s23d6 Fe+3. . . [Ar]3d5option (1) … inner orbital complex … μs=0option (2) … outer orbital complex … μs=4.9 B.Moption (3) … inner orbital complex … μs=1.732 B.Moption (4) … outer orbital complex … μs=5.9 B.M