Blackburn with Darwen is a unitary authority area in Lancashire, North West England. It consists of Blackburn, the small town of Darwen to the south of it, and the surrounding countryside. The population of the Unitary Authority taken at the 2011 census was 147,489.
The population of the Unitary Authority taken at the 2011 census was less than or equal 139,999.
It is definitely incorrect because the statement lists the population as 147,489 which is greater than 139,999. I think the system had trouble calculating the inequality. 