Which of the Following Is True of the Magnitude of Bacteremia

Which of the following is true of the magnitude of bacteremia required to cause infective endocarditis (IE) ?

A) The magnitude of bacteremias resulting from dental procedures is more likely to cause IE than that seen with bacteremias resulting from normal daily activities.
B) Cases of IE caused by oral bacteria probably result from frequent exposure to low inocula of bacteria in the bloodstream due to daily activities and not a dental procedure.
C) The quality of oral hygiene has no appreciable effect on the magnitude of bacteremia after toothbrushing.
D) The magnitude of bacteremia resulting from dental procedures is greater than that needed to cause experimental bacterial endocarditis (BE) in animals.