Which of the Following Defines Nursing Bottle Tooth Decay

Which of the following defines nursing bottle tooth decay? 

A)  Development of caries resulting from frequent use of non-sterile bottles and nipples. 
B)  Bacterial attack of teeth due to use of lead-rich drinking water. 
C)  Extensive tooth decay infant due to prolonged exposure to carbohydrate-rich fluids from a bottle. 
D)  Tooth decay resulting from prolonged exposure to soft food due to the infant's inability to swallow normally. 
E)  Tooth decay resulting from the rubbing of the nipple against the teeth and consequent thinning of enamel.