An infant is noted to have epicanthal folds, a broad nasal bridge, a large tongue, small ears, hypertelorism, Brushfield spots, a single palmar crease on each hand, and a harsh holosystolic murmur. What is the most common cause of this syndrome?
a. Deletion in the short arm of chromosome 5
b. Maternal meiotic nondisjunction
c. Paternal meiotic nondisjunction
d. Robertsonian translocation