The term infant was born with cord around neck，and the Apgar scores at 1 and 5 min were 3 and 7，respectively.The newborn became irritability，hypertonia and enhanced Moro reflex since postnatal 6-hour.What is the possible diagnosis
A
hypoglycemia
B
hypocalcemia
C
hypoxic-ischemic encephalopathy
D
intracranial hemorrhage
E
purulent meningitis