Instructions: In this task, you're given an article, a question which often contains a blank and four options (associated with "A", "B", "C", "D"). Your task is to find the correct answer (from the given options) for the question from the given article and return one of the options from "A", "B", "C", and "D". Do not generate anything else apart from one of the following characters: "A", "B", "C", "D". There is only one correct answer for each question.
Input: Article: If you are invited to a party by the Austrians and the suggested dress is "informal " (usually marked in the lower left-hand coner of the invitation) , it may mean dark suit and a white shirt for men and cocktail dress( ) for women. Or again, may mean something considerably less formal. "Formal" means a black tie and evening dress for men and a floor-length dress for women. If a man is in doubt about what to wear, he may come slightly overdressed and then take his coat and tie off when he sees that others are wearing sports shirts. National dress is always acceptable.
Question: If a lady receives an invitation marked with "formal", she should wear
Options: (A) a long dress (B) a cocktail dress (C) a short dress (D) a dark suit
Output:
A