Table:
text: Idaho
Counties
Counties
County County_seat License_Plate_Code Year_founded Population_2008_est_ Population_Percentage Area_sq_mi_ Area_
Bonneville Idaho Falls 8B 1911 99135 06.51 % 1901 2.17 %
Boundary Bonners Ferry 9B 1915 10962 00.72 % 1278 1.46 %
Butte Arco 10B 1917 2751 00.18 % 2234 2.55 %
Camas Fairfield 1C 1917 1126 00.07 % 1079 1.23 %
Canyon Caldwell 2C 1891 183939 12.07 % 604 0.69 %
Caribou Soda Springs 3C 1919 6826 00.45 % 1799 2.06 %
Cassia Burley 4C 1879 21348 01.40 % 2580 2.95 %
Clark Dubois 5C 1919 910 00.06 % 1765 2.02 %
Clearwater Orofino 6C 1911 8176 00.54 % 2488 2.84 %
Custer Challis 7C 1881 4254 00.28 % 4937 5.64 %

Question: What is the country seat for Idaho's license plate code 5c?