Detailed Instructions: This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.
Q: By the 20th century, the saloon, or lounge bar, had become a middle-class room[citation needed]carpets on the floor, cushions on the seats, and a penny or two on the prices,[citation needed] while the public bar, or tap room, remained working class with bare boards, sometimes with sawdust to absorb the spitting and spillages (known as "spit and sawdust"), hard bench seats, and cheap beer[citation needed]. This bar was known as the four-ale bar from the days when the cheapest beer served there cost 4 pence (4d) a quart.[citation needed]
A:
What socioeconomic class was associated with the lounge bar in the 20th century?