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").

An acquired characteristic is (A) a permanent welt gotten many years ago (B) freckles from your mom's genes (C) a large nose just like your dad's (D) brown, curly hair that resembles your sister's
Output:
A