The Nurse Is Preparing to Insert a Nasogastric (NG)tube

The nurse is preparing to insert a nasogastric (NG) tube.Which techniques should the nurse use to measure the length of an NG tube before gastric intubation?

A) Measure and mark a point 72 cm (30 inches) from the end.
B) Measure from the nose to the middle of the sternum.
C) Measure from the nose to the ear to the patient's navel.
D) Measure from the nose to the earlobe to the xiphoid process.