A Newborn Male Begins Vomiting a Few Hours After Birth

A newborn male begins vomiting a few hours after birth. Physical examination reveals tachypnea, intercostal retractions, and grunting respirations. The next day he develops abdominal distention. The child's symptoms are most likely caused by:

A) increased production of meconium.
B) abnormally sticky meconium.
C) enteric dysfunction resulting in abnormal peristalsis.
D) abnormally high levels of digestive enzymes.