The correct answer is C. A & B are correct.
Nondisclosure is the act of not revealing or making information available. It can be intentional or unintentional. Intentional nondisclosure is often referred to as concealment.
Inadvertent omission of information is a type of nondisclosure that occurs when someone forgets to mention something or does not realize that the information is important. This can happen for a variety of reasons, such as being busy, being distracted, or not being aware of the information.
Intentional suppression of information is a type of nondisclosure that occurs when someone deliberately chooses not to reveal information. This can be done for a variety of reasons, such as to protect someone’s privacy, to prevent harm, or to gain an advantage.
Both inadvertent omission of information and intentional suppression of information can be considered nondisclosure.