E-mail messages, their content, and metadata can provide useful evidence in a lawsuit because

A) they can establish a timeline of who knew what and when.
B) people tend to converse freely and informally in e-mail messages, which may provide a "smoking gun."
C) they can be used to trace a message to its true originator.
D) All of these choices are correct.

Metadata

Data that provides information about other data, such as creation date, author, and file size, often used in electronic document management.

E-Mail Messages

Electronic messages sent and received over a computer network, commonly used for personal, academic, and professional communications.

"Smoking Gun"

An expression used to describe incontrovertible evidence that proves a significant fact, often in a legal or criminal case.