Interindustry Competition Means That

Interindustry competition means that

A) in oligopolistic industries, a few large firms compete with one another in bidding down product price.
B) in some markets, the producers of a particular product might face competition from products produced by other industries.
C) firms that sell a product at one stage of production are faced with firms that buy the product at the next stage of production.
D) in most industries, there are usually a number of firms producing identical products.