According to the Following Emergency Department Course Excerpt, the Patient

According to the following Emergency Department Course excerpt, the patient was "intubated with an endotracheal tube." Emergency Department Course
When she came to the ED, the patient was in acute respiratory distress. She was intubated with an endotracheal tube and placed on SIMV. A CXR verified correct placement in her trachea.
What is the correct breakdown and translation of the term endotracheal?

A) endo (inside) + trache (trachea) + al (condition) = condition inside the trachea
B) endo (inside) + trache (trachea) + al (pertaining to) = pertaining to inside the trachea
C) endo (outside) + trache (trachea) + al (condition) = condition outside the trachea
D) endo (outside) + trache (trachea) + al (pertaining to) = pertaining to outside the trachea
E) endo (through) + trache (trachea) + al (pertaining to) = pertaining to through the trachea