he new challenge with supply chain management is how to manage the longer distribution channel, more specifically, the distribution from suppliers and ntract manufacturers all the way to consumers. Which one shows the steps of this process in order?

a$.$ supply network, producer$/$manufacturer$,$ distribution network, customer

b$.$ distribution network, supply network, producer$/$manufacturer$,$ customer

c$.$ producer$/$manufacturer$,$ distribution network, supply network, customer

d$.$ producer$/$manufacturer$,$ supply network, distribution network, customer