Write SQL query to solve given problem: What is the area code of Bishopville, SC?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.area_code FROM area_code AS T1 INNER JOIN zip_data AS T2 ON T1.zip_code = T2.zip_code WHERE T2.city = 'Bishopville' AND T2.state = 'SC'