Correct answer: (c) 1 and 3 only
Explanation
- A
1 and 2 only
(a) 1 and 2 only. NFC is short-range radio communication, but the design range is a few centimetres, not a metre. Statement 2 is false, so this pair fails.
- B
3 only
(b) 3 only. Encryption of sensitive NFC payloads is possible, but statement 1 is also correct. 3 only is incomplete.
- C
1 and 3 only
(c) 1 and 3 only. NFC uses electromagnetic radio fields for contactless links and can encrypt sensitive data. Typical range is about 4 cm (order of centimetres), not a metre. 1 and 3 only is the official key.
- D
1, 2 and 3
(d) 1, 2 and 3. Statement 2’s one-metre claim is wrong, so the full set is not the key.
Summary. Official key is (c) 1 and 3 only. Near Field Communication is contactless radio over a few centimetres and can use encryption. It is not specified for devices a metre apart. Statement 2 therefore drops. The keyed pair is 1 and 3.
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