Recent Research About Sudden Infant Death Syndrome (SIDS) Has Taught

Recent research about sudden infant death syndrome (SIDS) has taught us that

A) a syndrome is a recognizable pattern of events whose underlying cause is known
B) children should be put down for sleep on their backs
C) accurate criteria are now available to predict which children will die of SIDS
D) beds for children should be furnished with soft toys and mattresses
E) none of the above