When creating a single-station optical crossover, an error message appears "The direction of the fiber and cable is incorrectly selected". Which are the possible reasons?

When creating a single-station optical crossover, an error message appears "The direction of the fiber and cable is incorrectly selected". Which are the possible reasons?
A . The network management time of the network element is not synchronized
B . "Create reverse crossover" is not selected during configuration
C . The physical fiber connection error of the device
D . Lack of logical fiber between boards

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Answer: B