To Accurately Assess a Rectal Temperature on an Adult,the Nurse

To accurately assess a rectal temperature on an adult,the nurse would:

A) use a lubricated blunt tip thermometer.
B) insert the thermometer 2 to 3 inches into the rectum.
C) leave the thermometer in place up to 8 minutes if the patient is febrile.
D) wait 2 to 3 minutes if the patient has recently smoked a cigarette.