A Baby Is Born with a Cleft Palate and a Condition

Multiple Choice

A baby is born with a cleft palate and a condition called DiGeorge syndrome, which involves failure of third and fourth pharyngeal pouch derivatives to develop properly. The palate defect is corrected surgically, but regarding the pharyngeal pouch defect the parents are advised that the growing child may expect which of the following health problems?

A) Insufficient B-cell production by lymph nodes in the head and neck
B) Inability to secrete $\operatorname{IgA}$
C) Excessive numbers of circulating but defective erythrocytes
D) Increased oral infections due lack of palatine and pharyngeal tonsils
E) Conditions related to autoimmunity