I think it is true but I am not certain hope it is right though... :)
Answer:
Chopin's first étude focuses on a rippling chord progression. The piece is composed in the same ternary (or A-B-A) form as most of his Op. 10 études, introducing two ideas before coming back to repeat the first.
D. British Columbia, I think. I'm not 100% sure though. Hope that helps.