Marie leaves her five-month-old baby, Denise, with a baby sitter on weekdays. Denise has been unwell and cranky for a few days. On Thursday, Marie rushed home after getting a call from the baby sitter, who sounded very scared. Marie found Denise unresponsive and her pulse was very feeble. What could be a possible reason for this?
A. mental r*tardation
B. shaken baby syndrome
C. sudden infant death syndrome
D. attention-deficit hyperactive disorder
E. autism