​Companies That Produce Immunizations Are Required to Assign Lot Numbers

​Companies that produce immunizations are required to assign lot numbers to each batch of the product.These lot numbers are used to track and report (and then) :

A) ​any adverse events experienced by one or more patients
B) ​the manufacturer can then conduct an evaluation to find the cause of the patient's problem
C) ​the manufacturer might need to file a report with the Food and Drug Administration (FDA)
D) ​all of the above