A company`s Chief Operating Officer (COO) is concerned about the potential for competitors to infer proprietary information gathered from employees` social media accounts. Which of the following methods should the company use to gauge its own social media threat level without targeting individual employees? 

Answer options:

A. Utilize insider threat consultants to provide expertise.
B. Require that employees divulge social media accounts.
C. Leverage Big Data analytical algorithms.
D. Perform social engineering tests to evaluate employee awareness.

A