What Information Is Most Important to Teach the Client Going

What information is most important to teach the client going home with a peripherally inserted central catheter (PICC) line?

A) "Avoid carrying your grandchild with the arm that has the IV."
B) "Be sure to place the arm with the IV in a sling during the day."
C) "Flush the IV line with normal saline daily."
D) "You can use the arm with the IV for most of the activities of daily living."