Iola (pronounced ) is a city situated along the Neosho River in the northwestern part of Allen County, located in Southeast Kansas, in the Central United States. As of the 2010 census, the city population was 5,704. Iola is the county seat of Allen County. It is named in honor of Iola Colborn.

Can we draw the following conclusion?
The Neosho River is the deepest river in Kansas.

Select from the following.
[a]. Yes;
[b]. It's impossible to say;
[c]. No;
[b].