Consider four survivors on an island. 
Which of the following pairs of survivors has a double-coincidence of wants?
Definitions:
NFL Teams
are professional football teams that are part of the National Football League, a major American football league consisting of 32 teams divided equally between the National Football Conference (NFC) and the American Football Conference (AFC).
Player Productivity
The effectiveness and efficiency with which a player or participant contributes to achieving the goals in a game or competition.
Draft-Pick Trade
A transaction in sports leagues where teams exchange their draft positions or selections among each other, often involving future draft picks or current players to balance the value.
Market Wage
The prevailing pay rate for a specific job in the labor market.
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