【单选题】The nurse is administering an intravenous analgesic to a laboring woman. The woman inquires as to why the nurse is waiting for a contraction to begin before she infuses the medication into the intrave...
A.
"The medication will affect you and your pain level only when given during a contraction."
B.
"The medication will provide optimal relief when it is given while your pain level is highest."
C.
"Because the uterine blood vessels constrict during a contraction, the fetus will be less affected by the medication."
D.
"You will experience a lower incidence of adverse effects from the medication when administered during a contraction."