human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Class, Wheel arrangement, Fleet number(s), Manufacturer, Serial numbers, Year made, Quantity made, Quantity preserved
###Question: what is the class when the quantity perserved is 0 and the quantity made is 5?
gpt
SELECT Class FROM table WHERE Quantity preserved = 0 AND Quantity made = 5