After a data center is upgraded with new Cisco Nexus switches, some of the links using multimode fiber no longer work, which type Of multimode cables are valid?

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After a data center is upgraded with new Cisco Nexus switches, some of the links using multimode fiber no longer work, which type Of multimode cables are valid?
A . OM4 cable for 700 mat 10 Gb
B . OM3 cable for50 m at 40 Gb with QSFP BiDi
C . OM4 cable for 150 m at 40 Gb QSFP BiDi
D . OM2 cable for 550 mat 10 Gb

Answer: B