What Is Personally Identifiable Information (PII)

What is personally identifiable information (PII) ?

A) Any data that could potentially identify a specific individual.
B) Information transmitted without encryption and includes information collected from public records, phone books, corporate directories, websites, etc.
C) Information transmitted with encryption and, when disclosed, results in a breach of an individual's privacy and can potentially cause the individual harm.
D) The use of a false identity to artificially stimulate demand for a product, brand, or service.