A child with a small head,minor anomalies of the face including a thin upper lip,growth delay,and developmental disability can have all of the following,except:

A child with a small head,minor anomalies of the face including a thin

1.	A child with a small head,minor anomalies of the face including a thin upper lip,growth delay,and developmental disability can have all of the following,except:
A.	A mendelian syndrome
B.	A polygenic syndrome
C.	A chromosomal syndrome
D.	A teratogenic syndrome
Answer» C. A chromosomal syndrome