A Firm's First-Order Condition from the Cournot Game with General $P ( Q ) q _ { i } - C _ { i } \left( q _ { i } \right) = 0$

question 17

Multiple Choice

A firm's first-order condition from the Cournot game with general demands and costs is

• A) \(P ( Q ) q _ { i } - C _ { i } \left( q _ { i } \right) = 0\) .
• B) \(P ( Q ) - C _ { i } ^ { t } \left( q _ { i } \right) = 0\) .
• C) \(P ( Q ) + P ^ { t } ( Q ) \sum _ { j = 1 } ^ { n } q _ { j } - C _ { i } ^ { t } \left( q _ { i } \right) = 0\) .
• D) \(P ( Q ) + P ^ { t } ( Q ) q _ { i } - C _ { i } ^ { t} \left( q _ { i } \right) = 0\) .

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