A Patient Asks the Nurse Why a Medication Prescribed by the Provider

A patient asks the nurse why a medication prescribed by the provider "didn't do anything at all." Which statement by the nurse accurately describes how genetics influence drug action?

A) "Genetic differences can result in significant differences in how each patient's body handles the same medication."
B) "Genetic differences can cause mutations in enzymes, changing the way they function. This can alter how the body metabolizes and excretes drugs."
C) "Because of genetic differences, medication may accumulate to toxic levels in one patient while in another patient may be inactivated before it can have a therapeutic effect."
D) "Genetic differences can be expressed as an alteration in the structure of an enzyme, which can cause a defective receptor and an allergic response to drugs."
E) "Genetic differences in patients who are biracial result in an allergic response to medications."