To Accurately Measure the Rectal Temperature in an Adult,the Nurse

To accurately measure the rectal temperature in an adult,the nurse would:

A) use a lubricated blunt-tip thermometer.
B) insert the thermometer 5 to 7.5 cm (2 to 3 in. ) into the rectum.
C) leave the thermometer in place for up to 8 minutes if the patient is febrile.
D) wait for 2 to 3 minutes if the patient has recently smoked a cigarette.