When Suctioning a 46-Year-Old Male with a Tracheostomy Tube, Which

When suctioning a 46-year-old male with a tracheostomy tube, which of the following is appropriate?

A) Suction from above, using the mouth or nose.
B) Suction no more than 5 seconds using a hard-tipped suction.
C) Introduce 20 mL of sterile water into the tracheostomy tube prior to suctioning.
D) Insert the suction cannula until resistance is met.