Tỉ lệ thành thị tăng so với nông thôn

Which sequence of transformations on preimage ∆abc will not produce the image ∆a'b'c'? a. reflection across the line y = x b. rotation 180° clockwise about the origin followed by a reflection across the line y = -x c. reflection across the x-axis followed by a reflection across the y-axis d. reflection across the line y = -x followed by a rotation 180° counterclockwise about the origin e. reflection across the y-axis followed by a rotation 90° clockwise about the origin

Witch one is it soo it the the question b.a,b,c,d

Hey, i was what is consisted in a sustainable city? like what unique designs they have, etc. for answering ; )