Autosomal monosomy is not seen in live births because:

A) its effects are so small as to be overlooked.
B) its effects do not set in until adulthood.
C) its effects are so lethal as to cause spontaneous abortion early in pregnancy.
D) it only occurs in sex chromosomes and therefore does affect nonreproductive function.
E) the births lead to the establishment of a clone of abnormal cells.