character: Ms. Patel
topic: Basics of Online Payment Systems
grade: 10
subject: Computer Science
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character: Mr. Johnson
topic: Understanding Digital Wallets
grade: 10
subject: Computer Science
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character: Mrs. Lee
topic: The Security of Online Transactions
grade: 10
subject: Computer Science
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character: Mr. Thompson
topic: Overview of E-Commerce Payment Methods
grade: 10
subject: Computer Science
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