What are the requirements for tranquilization/sedation according to Banfield's anesthesia system?

The patient must be able to walk.
Tranquilization/sedation is used for non-painful procedures such as blood sampling and otoscopic examination.
The depth of sedation should be such that it is not possible to place an endotracheal tube.
ECG, pulse oximeter, and blood pressure monitoring should be used at the discretion of the physician.
a) Only I and II are correct.
b) Only II and III are correct.
c) Only II, III, and IV are correct.
d) All statements are correct.