A client with pernicious anemia is receiving parenteral vitamin B12 therapy. Which client statement indicates effective teaching about this therapy?
a) "I will receive parenteral vitamin B12 therapy monthly for 6 months to a year."
b) "I will receive parenteral vitamin B12 therapy until my vitamin B12 level returns to normal."
c) "I will receive parenteral vitamin B12 therapy until my signs and symptoms disappear."
d) "I will receive parenteral vitamin B12 therapy for the rest of my life."
Answer: "I will receive parenteral vitamin B12 therapy for the rest of my life."