【单选题】

A client with iron-deficiency anemia is prescribed liquid iron supplements. The nurse teaches the client's about how to take this drug. Which of the following statements by the client indicates that the education is effective
A．"I will report any black stools to the physician. "

B．"I will dilute the medication and drink it with a straw. "
C．"I will check my gums for any bleeding. "
D．"I can use antidiarrheal drugs if I develop diarrhea. "