The Patient Has a Catheter That Must Be Irrigated

The patient has a catheter that must be irrigated. The nurse is using a needleless closed irrigation technique. In which order will the nurse perform the steps, starting with the first one?
1) Clean injection port.
2) Inject prescribed solution.
3) Twist needleless syringe into port.
4) Remove clamp and allow to drain.
5) Clamp catheter just below specimen port.
6) Draw up prescribed amount of sterile solution ordered

A) 3, 2, 6, 1, 5, 4
B) 5, 6, 1, 2, 3, 4
C) 1, 5, 6, 3, 2, 4
D) 6, 5, 1, 3, 2, 4