JEE Main 2023 Chemistry question

The magnetic moment is measured in Bohr Magneton (BM). Spin only magnetic moment of Fe in and complexes respectively is :

• (A)6.92 B.M. in both
• (B)3.87 B.M. and 1.732 B.M
• (C)5.92 B.M. and 1.732 B.MCorrect
• (D)4.89 B.M. and 6.92 B.M.