Which Is a Disadvantage of the FDA Adverse Event Reporting

Which is a disadvantage of the FDA Adverse Event Reporting System (FAERS)?
A) Reports received from the manufacturers are forwarded to the FDA to be added to its computerized database.
B) The reporting system can restrict the use of a drug in specific populations if found unsafe.
C) Reported adverse effects can remove the product from the market.
D) The nurse should examine the incidence of adverse effects that occur over and above that caused by a placebo.