Can I play one additional piece of Chopin etude along with Bach, Chopin Etude, a Piece that is composed after 1900?
It will be total of two Chopin etudes, one piece of Bach and a Piece that is composed after 1900.

A17.
In the first round,
(A) 1 piece from Bach
(B) 1 piece from Chopin
(C) Multiple pieces composed after 1900.
The performance time shall be between 20 minutes and 25 minutes in total.
And, you cannot play two pieces of Chopin Etude for (C), because its composed year is not appropriate.