Question: When training a patient to perform diaphragmatic breathing exercises correctly, we will indicate that: 
 Options:  <1> Inhale through your nose while counting to 3 and exhale quickly with pursed lips. <2> Inhale through the mouth and contract the abdominal muscles for another 7 seconds. <3> Firmly press the abdomen out and down when exhaling. <4> Inhale slowly and deeply through the nose and push the abdomen outward. <5> Help yourself by supporting your hands on the rib cage while inspiring.
4