The Nurse Is Having Difficulty Drawing Blood from a Client

The nurse is having difficulty drawing blood from a client.After 1 minute of trying without success, the nurse releases the tourniquet.Why does the nurse perform this action?

A) In clients with hypertension, extended tourniquet use causes increased blood pressure.
B) If the client's skin is fragile, the tourniquet can be uncomfortable.
C) Leaving the tourniquet on longer can cause edema.
D) Laboratory results may be altered if the tourniquet is left on.