The correct answer is D.All refrigerated delivery trucks were required to have a record-keeping thermometer mounted inside.
The E. coli is the bacteria which arouse in 1990`s. Its outbreak depends on the conservation of the food, if it is in bad conditions therefore it will affect. To avoid loosing customers and having bad fame David M. Theno implement ed at Jack in the Box the use of the refrigerators and to have a record-keeping thermometer mounted inside.
