Which of the Following Best Expresses Strawser's Basic Conclusion in "Moral

Which of the following best expresses Strawser's basic conclusion in "Moral Predators: The Duty to Employ Uninhabited Aerial Vehicles"?

A) The military has an obligation not to use uninhabited aerial vehicles to carry out lethal attacks.
B) It is permissible, but not obligatory, for the military to use drones to conduct military operations.
C) When it doesn't interfere with the achievement of military objectives, militaries have an obligation to use drones to carry out lethal attacks.
D) Uninhabited aerial vehicles are obligatory for surveillance operations but forbidden for combat operations.