Which of the following is used to facilitate communications with a user's smartphone in order to make purchases and payments by proximity?

A. Bluetooth
B. IR
C. NFC
D. WPS

Answer: C. NFC

Computer Science & Information Technology

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a. list.add("Red"); b. list.add(new Integer(100)); c. list.add(new java.util.Date()); d. list.add(new ArrayList());

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