Who is a carrier of an X-linked trait?

Who is a carrier of an X-linked trait?
  a. homozygous dominant female
  b. heterozygous female
  c. homozygous recessive female
  d. homozygous male
  e. heterozygous male

Question 2

Which statement about sex chromosomes is correct?
  a. The Y chromosome carries a greater number of genes for nonsexual traits than does the X.
  b. X and Y are different in size but carry nearly equal numbers of genes.
  c. The X chromosome carries more genes for nonsexual traits than does the Y.
  d. The X chromosome carries only gender-related genes.
  e. The X chromosome carries the SRY gene.