When some unidentified / unknown person / firm sends you mail in a trustworthy /lucrative way asking for sensitive banks and online payment information, this is a case of __?

When some unidentified / unknown person / firm sends you mail in a trustworthy /lucrative way asking for sensitive banks and online payment information, this is a case of __?
[A]spam
[B]hacking
[C]Phishing
[D]Vishing
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