<Tr> <Td> Alameda </Td> <Td> Union City </Td> <Td> 9.750% </Td> </Tr> <Tr> <Td> Alpine </Td> <Td> Countywide </Td> <Td> 7.250% </Td> </Tr> <Tr> <Td> Amador </Td> <Td> Countywide </Td> <Td> 7.750% </Td> </Tr> <Tr> <Td> Butte </Td> <Td> Paradise </Td> <Td> 7.750% </Td> </Tr>

What city in california has the lowest sales tax