Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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12.2 the airbnb platform facilitates bookings between guests and hosts who may prefer to pay in a currency different from their destination currency , which may require currency conversions to accommodate these differing currency preferences . 

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. OPTIONS: ["Unilateral change", "Contract by using", "Arbitration", "Choice of law", "Limitation of liability", "Content removal", "None", "Jurisdiction", "Unilateral termination"].