Why Do Sex-Linked Abnormalities Affect Men with Much Greater Frequency

Why do sex-linked abnormalities affect men with much greater frequency than women?

A) if there is a problem on the x-chromosome in men, there is not a second x-chromosome to offset that abnormality
B) the y-chromosome is thought to be a "broken x" chromosome, leading to greater genetic difficulties
C) the interaction of only one x-chromosome with the hormone TDF (testes determining factor) is a genetic combination that often results in sex-linked disorders
D) the x-chromosome is always dominant, while the y-chromosome is always recessive