Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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please note that if you purchase a subscription through the apple itunes store or our iphone application , you may cancel automatic renewals by selecting manage app subscriptions in your itunes account settings and selecting the subscription you want to modify . 

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