At U$.$S$.$ Customs and Border Protection $($CBP$),$ certain CBP personnel provide around$-$the$-$clock monitoring and reporting to the CBP Commissioner, facility operators, and field offices in order to provide situational awareness that can be used to shape the agency$$s operational picture and facilitate decision making regarding threats to CBP facilities and employees. These CBP personnel may use publicly available information, including information obtained from social media sites, to provide greater situational awareness and in turn greater security throughout CBP$.$

From the information given above, it can be validly concluded that

A$)$

all CBP employees who provide situational awareness through monitoring and reporting are not the same as those who use information from social media sites

B$)$

at least some CBP employees who provide situational awareness through monitoring and reporting are not employees who use information from social media sites

C$)$

all CBP employees who use information from social media sites are the same employees who provide situational awareness through monitoring and reporting

D$)$

at least some CBP employees who provide situational awareness through monitoring and reporting are not different from employees who may use information from social media sites

E$)$

CBP employees who use information from social media sites are never the employees who provide situational awareness through monitoring and reporting