Sustainable supply chain

Taking into consideration the supply chain value creation model that you learnt earlier, which of the following situations, according to you, is not an example of a sustainable supply chain?

A) Amul using CNG trucks instead of diesel trucks for transportation of milk.

B) To ensure product safety, e-commerce companies using plastic wrappings to ship their products.

C) HUL using solar power to run manufacturing factories instead of using electricity from coal power plants.

D) Xiaomi selling refurbished products that were returned to it by the customers after the initial purchase due to some fault rather than discarding them as waste.