Correct

底册

/ de cè /
Strokes

Example

As a Noun

bound copy of a document kept on file

1
Qǐng
chāo
liǎng
fèn
  
,
fèn
shàngbào
上报
  
,
fèn
liú
zuō
de
底册
  

Make two copies, one for the leadership, the other to be kept on file.