Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_49 (total_produced VARCHAR, service VARCHAR, builder’s_model VARCHAR)
### Question:
What is the total amount of freight produced of u28c?
### Answer:
SELECT total_produced FROM table_name_49 WHERE service = "freight" AND builder’s_model = "u28c"