JEE Main 2020 Chemistry question

has n number of geometrical isomers. Then, the spin-only magnetic moment and crystal field stabilisation energy [CFSE] of , respectively, are: [Note: Ignore the pairing energy]

• (A)2.84 BM and
• (B)1.73 BM and Correct
• (C)5.92 BM and 0
• (D)0 BM and