Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What kind of D.C. has Races smaller than 20, and Points larger than 0, and Drivers of christian vietoris, and Wins of 1?

### Inputs:
table_name: table, columns: ['Year', 'Drivers', 'Races', 'Wins', 'Poles', 'F.L.', 'Points', 'D.C.', 'T.C.']

### Response:
SELECT D.C. FROM table WHERE Races < 20 AND Points > 0 AND Drivers = christian vietoris AND Wins = 1