Answer: a short call option.

## Explanation In merger arbitrage, the strategy involves buying the target company's stock and potentially shorting the acquirer's stock. The payoff profile resembles: - **Riskless bond component**: Represents the spread between the current market price and the acquisition price - **Short call option component**: Represents the risk that the deal might fail ### Why Option B is Correct: 1. **Merger Arbitrage Structure**: - Long target company stock - Potential short position in acquirer stock - The strategy profits from the spread between current price and acquisition price 2. **Option Analogy**: - The riskless bond represents the guaranteed spread if the deal completes - The short call option represents the risk that the deal fails (similar to being short volatility) - If the deal fails, the target stock typically falls significantly, similar to the payoff of a short call option 3. **Risk Profile**: - Limited upside (the spread) - Significant downside risk if deal fails - This asymmetric payoff matches a riskless bond + short call option combination This structure is fundamental to understanding merger arbitrage risk-return characteristics in alternative investments.

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