You will be given a definition of a task first, then some input of the task.
In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

Dozens in your workplace are sick with the flu. To protect yourself, you might (A) inject yourself with deactivated elements of the illness (B) inject yourself with a smallpox vaccine (C) Inject yourself with a healthy person's blood (D) inject yourself with morphine
Output:
A