The three major variations of online catalogues are

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Part $1$

A$.$

$$EDI$,$ ERP, and ASN.

B$.$

cost$-$based$,$ market$-$based$,$ and competitive bidding.

C$.$

all auction$-$based.

D$.$

drop$$ shipping, channel$$ assembly, and postponement.

E$.$

catalogues by$$ vendors, catalogues by$$ intermediaries, and exchanges provided by buyers.