The correct answer is b . chaos
Hangzhou was the Capital City of Song China.
Song Dynasty was divided into two distinct period; Northern Song and Southern Song.
Northern Song was from 960 to 1127 and its capital city was Bianjing, now known as Kaifeng.
Southern Song was from 1127 to 1279 and its capital city was Lin'an, now known as Hangzhou.
Answer:
Three-fifths 
Explanation:
This question is mathematics not history; however, the solution is as follows.
Given
Line Segments A'B' and AB
Center of Dilation = P


Required
Scale factor of dilation;
The scale factor of dilation is defined as thus;
Scale Factor is the ration of the distance between the center points and origin of the dilated line segment to the original line segment;
In other words;

Substitute
and 

Hence, the scale factor of this dilation is Three-fifths or 