Arun says: “I am a liar”. Arun is a/an:
Explanation:
A truth-teller will never say “I am a liar” because that would be a lie and he cannot speak a lie.
A liar will never say “I am a liar” because that would be true and he cannot speak the truth.
∴ Only an alternator can say “I am a liar”.
Hence, option (c).
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