$12.$ Which one is the AI application with the highest risk of ethical issues?

$($A$)$ Environmental authorities utilize the Internet of things $($IoT$)$ devices to monitor

air and water quality.

$($B$)$ The JFK airport website has chatbot as a virtual AI assistant to give a quick

answer to Covid$-19$ questions.

$($C$)$ Criminal justice authorities adopt machine learning models to predict potential

criminals or vulnerable victims.

$($D$)$ Public communicators use big data to assess public sentiment about policy

issue