A preterm infant (29 weeks old) has a platelet count of 85 109/L. Is this a normal or abnormal ...

A preterm infant (29 weeks old) has a platelet count of 85  109/L. Is this a normal or abnormal finding?
 
  a. Abnormal because infants have normal adult amounts of platelets after 27 weeks' gestation
  b. Normal because preterm infants have decreased platelet counts as a result of abnormal birthing circumstances
  c. Normal because platelet development is similar to lung development in an infant; levels depend on the age of gestation
  d. Abnormal because preterm infants are subject to DIC, and that results in a decreased platelet count