Which Action When Emptying a Urine Drainage Bag Is Correct

Which action when emptying a urine drainage bag is correct?

A) Report that the drainage bag needs emptying to the nurse.
B) Unsecure the urine drainage bag from the bed frame before beginning the emptying process.
C) Unclamp the emptying spout on the urine drainage bag and allow all the urine to drain into a graduate that has been placed on a paper towel on the floor below the urine drainage bag.
D) Disconnect the urine drainage bag from the catheter tubing, dispose of the urine in the toilet and the urine drainage bag in a facility-approved waste container, and attach a new urine drainage bag.