<Tr> <Td> 1956 </Td> <Td> Georgia Tech </Td> <Td> 10--1 </Td> <Td> Bobby Dodd </Td> <Td> B (QPRS), SR </Td> <Td> </Td> </Tr> <Tr> <Td> Iowa </Td> <Td> 9--1 </Td> <Td> Forest Evashevski </Td> <Td> CFRA </Td> <Td> </Td> </Tr> <Tr> <Td> Oklahoma </Td> <Td> 10--0 </Td> <Td> Bud Wilkinson </Td> <Td> AP, BR, BS, DeS, DuS, FWAA, HAF, INS, L, NCF, SR, UP, WS </Td> <Td> </Td> </Tr> <Tr> <Td> Tennessee </Td> <Td> 10--1 </Td> <Td> Bowden Wyatt </Td> <Td> SR </Td> <Td> </Td> </Tr>

Which ncaa conference has the most championships in football