Hemophilia is an X-linked recessive trait in humans. If phenotypically normal parents have children without hemophilia, what information could be determined by a pedigree analysis?

A) Neither parent carries the hemophiliac allele.
B) None of their children is a carrier of the hemophilia allele.
C) None of their children could have hemophiliac children.
D) The exact genotypes of the parents or children