If 100 Cups of Strong Coffee Contain a Lethal Dose

If 100 cups of strong coffee contain a lethal dose of caffeine, why don't coffee drinkers eventually die from caffeine overdose?

A) Coffee drinkers who drink more than 100 cups of coffee a week will eventually die from the bioaccumulation.
B) Because of its molecular form, all of the caffeine is not actually absorbed into the body.
C) Once the coffee cools, the caffeine is not as strong as it was when the coffee was fresh.
D) Coffee drinkers who drink more than 100 cups of coffee a month will eventually die from the bioaccumulation.
E) Our bodies metabolize the caffeine before lethal concentrations are reached.