Why Are Bottle-Fed Babies More Prone to Obesity Than Breastfed

Why are bottle-fed babies more prone to obesity than breastfed babies?

A) Without breast milk, babies will not gain specific antibodies, which in some cases may alter the epigenome enough to turn off the 'agouti' gene.
B) There are specific additives in bottle formula that increase the fat intake of the infant.
C) Babies are more likely to be urged to finish the formula in a bottle than to empty a breast after the babies are full or sated.
D) Bottle milk is sweeter than breast milk, which primes the child to eat more sugary foods.
E) All of the answers are correct.