Which of the following regarding metabolic pathways is correct?

A)Catabolic pathways are generally reductive,while anabolic pathways are generally oxidative.
B)Catabolic pathways use a wide variety of substrates to produce a small number of waste products.
C)An amphibolic pathway is extremely wasteful because it simultaneously operates as both an anabolic pathway and a catabolic pathway.
D)NAD⁺ is used as a reducing agent in catabolic pathways,while NADPH is used as an oxidizing agent in anabolic pathways.