Select the correct text in the passage.

Which detail in paragraph 9 best supports the inference that certain features of the house are totally new to Zitkála-Šá?

[9] From the table we were taken along an upward incline of wooden boxes, which I learned afterward to call a stairway. At the top was a quiet hall, dimly lighted. Many narrow beds were in one straight line down the entire length of the wall. I was tucked into bed with one of the tall girls, because she talked to me in my mother tongue and seemed to soothe me.

A. upward incline of wooden boxes
B. a quiet hall, dimly lighted
C. narrow beds were in one straight line
D. the entire length of the wall