Question: WYAB serves what most populous county in Mississippi?

Context paragraphs:
Hinds County, Mississippi: Hinds County is a county located in the U.S. state of Mississippi.  As of the 2010 census, the population was 245,285, making it the most populous county in Mississippi.  Its county seats are Raymond and Jackson, the state capital.  The county is named for General Thomas Hinds, a hero of the Battle of New Orleans during the War of 1812.

Hennepin County, Minnesota: Hennepin County ( ) is a county in the U.S. state of Minnesota.  As of the 2010 census the population was 1,152,425.  It is the most populous county in Minnesota and the 35th-most populous county in the United States; more than one in five Minnesotans live in Hennepin County.  Its county seat is Minneapolis, the state's most populous city.  The county is named in honor of the 17th-century explorer Father Louis Hennepin.

Taliaferro County, Georgia: Taliaferro County is a county located in the U.S. state of Georgia.  As of the 2010 census, the population was 1,717, making it the least populous county in Georgia and the second-least populous county east of the Mississippi River (after Issaquena County, Mississippi).  The county seat is Crawfordville.

DeSoto County, Mississippi: DeSoto County is a county located in the U.S. state of Mississippi.  As of the 2010 census, the population was 161,252, making it the third-most populous county in Mississippi.  Its county seat is Hernando.  DeSoto County is part of the Memphis, TN-MS-AR Metropolitan Statistical Area (MSA).  It is the second-most populous county in the MSA.  The county has lowland areas that were developed in the 19th century for cotton plantations, and hill country in the eastern part of the county.

Monmouth County, New Jersey: Monmouth County is a county located in Central New Jersey, in the United States within the New York metropolitan area, and the northernmost county along the Jersey Shore.  As of the 2016 Census estimate, the county's population was 625,846, making it the state's fifth-most populous county, representing a decrease of 0.7% from the 2010 Census, when the population was enumerated at 630,380, in turn an increase of 15,079 from 615,301 at the 2000 Census.  As of 2010, the county fell to the fifth-most populous county in the state, having been surpassed by Hudson County.  Its county seat is Freehold Borough.  The most populous place was Middletown Township, with 66,522 residents at the time of the 2010 Census, while Howell Township covered 61.21 sqmi , the largest total area of any municipality.

Chittenden County, Vermont: Chittenden County is the most populous county in the U.S. state of Vermont.  As of the 2010 census, the population was 156,545.  The county's population estimate for 2016 was 161,531.  Its shire town (seat) is Vermont's most populous municipality, the city of Burlington.  The county has over a quarter of the state's population and more than twice the population of to Vermont's second most populous county of Rutland.  The county also has more than twice the population density of Vermont's second most dense county of Washington.  The county is named for Vermont's first governor and one of the framers of its Constitution as a Republic and state, Thomas Chittenden.

Philadelphia County, Pennsylvania: Philadelphia County is a county located in the commonwealth of Pennsylvania.  At the 2010 census, the population was 1,526,006, making it the most populous county in the state, despite being the second smallest county in the state by land area.  Philadelphia County is one of the three original counties, along with Chester and Bucks counties, created by William Penn in November 1682.  Since 1854, the county has been coterminous with the city of Philadelphia, which also serves as its seat.  It is the most populous county in the United States coterminous with a municipality.

Ocean County, New Jersey: Ocean County is a county located along the Jersey Shore in the U.S. state of New Jersey.  Its county seat is Toms River.  Since 1990, Ocean County has been one of New Jersey's fastest-growing counties.  As of the 2016 Census estimate, the county's population was 592,497, a 2.8% increase from the 576,567 enumerated in the 2010 United States Census, making Ocean the state's sixth-most populous county.  The 2010 population figure represented an increase of 65,651 (+12.8%) from the 2000 Census population of 510,916, as Ocean surpassed Union County to become the sixth-most populous county in the state.  Ocean County was also the fastest growing county in New Jersey between 2000 and 2010 in terms of increase in the number of residents and second-highest in percentage growth.  Ocean County was established on February 15, 1850, from portions of Monmouth County, with the addition of Little Egg Harbor Township which was annexed from Burlington County on March 30, 1891.  The most populous place was Lakewood Township, with 92,843 residents at the time of the 2010 Census (up 32,491 since 2000, the largest population increase of any municipality in the state), while Jackson Township, covered 100.62 sqmi , the largest total area of any municipality in the county.

WYAB: WYAB 103.9 FM (formerly 93.1 FM) is a radio station serving the city of Jackson, Mississippi, including Madison County, Yazoo County, Rankin County, and Hinds County.  The studios of WYAB are located within the Cotton Exchange Plaza in Flora, Mississippi.

Wayne County, Michigan: Wayne County is the most populous county in the U.S. state of Michigan.  As of the 2016 census, its population was 1,749,366 making it the 19th-most populous county in the United States.  The 2014 Census update listed the county's population at 2,264,804.  The county seat is Detroit, the most populous city in Michigan and 18th-most populous city in the United States.  The county was founded in 1796 and organized in 1815.

Supporting paragraphs: WYAB Hinds County, Mississippi
Answer: Hinds County