Response to Black and White films?

I will try to keep it simple:

Basiclly there are 2 categories of films which are called Black and White: A)silver based films without any dyes, the negative is black/grey/transparent and contains silver, use with black and white developer ONLY B)silver based films with dyes, the negative has a orange to brown colour, to be developed in C-41 (chemistry for colour films)the actual negative is silverfree. ((Kodak CN, Ilford XP2 Super)

Part 2 to follow

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