Why nc is not the output channels

In this question. Why the first option is incorrect. nc is the number of classes and the number of output channels? Are they different? Thanks

Yes, they are different.
Channels are the “filters”. They are internal to the network. There are no “output channels”.
Classes are the labels you are predicting asr the outputs.

Thanks for your reply. Do you mean that there is no such things as input channels or output channels so the first option is false thanks

Already answered.
(padding with more characters)

thanks I understanded