What often separates the modifier from the code number?

What is the relatively rare condition that can cause respiratory depression?

A) The eyes can develop scar tissue on the retina from a high concentration of oxygen. B) High concentration of oxygen can depress breathing when the patient has an allergic reaction from the oxygen. C) Chronic obstructive pulmonary disease (COPD) has changed the stimulus to breathe to the hypoxic drive and high concentration can depress breathing. D) Lungs can react unfavorably to oxygen when the concentration is too high for a long period of time and this can depress breathing.

Normal oxygen saturation levels are:

A) 80% to 90%. B) 90% to 95%. C) 96% to 100%. D) over 100%.