What does it mean if a 14-month-old is in the 60th percentile for length?

A. It means the child is not a normal length compared to other 14
month olds in the U.S. because the 100th percentile is normal.
B. It means 6 out of 10 healthy 14 month olds in the U.S. are longer
than the child.
C. It means 40 percent of all healthy children in the U.S. are the same
length or less at 14 months old.
D. It means 60 percent of all healthy children in the U.S. are the same
length or less at 14 months old.