Answer:
The best option is when both athletes decide not to take drugs and each earns $5,000.
Explanation:
In a Nash equilibrium scenario:
Athlete 1's decision
take drug do not take drug
Athlete 2's $5000 - x/ $0 /
decision $5,000 - x $10,000 - x
take drug
do not $10,000 - x/ $5,000 /
take drug $0 $5,000
The best possible situation occurs when both athletes decide not to take the drugs. In this situation both athletes win $5,000. If both athletes decide to take the drug and charge the price, they will both earn $5,000 - X.
The Nash equilibrium should show the situation where both players win the most regarding the other player's strategy.