Answer:
The correct answer is the option D: All of these are correct.
Step-by-step explanation:
On the one hand, a "trust" is known in the economics and business field as the partnership between two or more companies that produce in the same industry and therefore that the main objective of this new agreement among the partners is to increase the market area or to take more advantage by working together, increasing both parties revenues.
On the other hand, the NFL trust is known to dominate the market of the football league in all its aspects, including all the teams logos and trademarks as well as the organization of the league's properties rights and the distribution of revenue for those concepts.