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In reinforcement learning applied to trading, what is the primary function of a positive advantage residual according to actor-critic formulations?

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• A.It represents the absolute profit generated by a trade minus transaction costs, directly rewarding the agent for net positive cash flow.
• B.It measures the expected future reward of a state regardless of the specific action taken, updating the critic network's baseline valuation.
• C.It indicates that the chosen trading action yielded a higher return than the baseline expectation, signaling the model to increase the probability of that action.
• D.It quantifies the difference between the bid and ask spread during execution, helping the agent minimize market slippage.

Which daily operational mechanism in derivatives trading creates a quantifiable feedback loop specifically triggered by adverse price movements?

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• A.The issuance of a margin call requiring the deposit of additional funds to meet maintenance requirements.
• B.The automatic execution of stop-loss orders to liquidate losing positions before the account is depleted.
• C.The daily mark-to-market settlement process that credits or debits the account based on the closing price.
• D.The dynamic adjustment of delta hedging ratios to maintain a market-neutral portfolio.