After a Client's Nasogastric (NG)tube Is Inserted,what Is the BEST

After a client's nasogastric (NG) tube is inserted,what is the BEST way for the nurse to confirm the tube is correctly placed?

A) Inject air and auscultate for a "whoosh."
B) Aspirate for gastric contents and measure pH.
C) Ask the client if the tube can be felt in the stomach.
D) Ask the health care provider to check the placement.