In business, perfect substitutes are products that are identical to each other, with similar characteristics, utility and price. They usually refer to certain commodities, specially agricultural products, e.g. corn. But the concept only refers to the products being on their primary state, for example once corn is processed into cooking oil, you can recognize the different brands like Mazola or Crisco.
Perfect substitutes shouldn't be branded or at least its purchase should not be influenced by its brand. In real life, perfect substitutes only apply to raw materials or primary goods, but as a concept it is used to explain how markets should theoretically work. E.g. perfect substitutes should all be price takers, identical and customers should not be able to distinguish between them.
It should be B. The reason being is that most websites are just based on opinions instead of facts, and especially a tv news program, Those people state too many opinions instead of facts.
