In which round did Roy Salvadori won Class D and Alan Hutcheson won Class B?
CREATE TABLE table_24853015_1 (round VARCHAR, class_d_winner VARCHAR, class_b_winner VARCHAR)
SELECT round FROM table_24853015_1 WHERE class_d_winner = "Roy Salvadori" AND class_b_winner = "Alan Hutcheson"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_24853015_1 (round VARCHAR, class_d_winner VARCHAR, class_b_winner VARCHAR) Question: In which round did Roy Salvadori won Class D and Alan Hutcheson won Class B? [/INST] SELECT round FROM table_24853015_1 WHERE class_d_winner = "Roy Salvadori" AND class_b_winner = "Alan Hutcheson" </s>