With Respect to X-Linked Recessive Inheritance, Which, If Any, of the Following

Multiple Choice

With respect to X-linked recessive inheritance, which, if any, of the following statements is false?

A) Males with just one mutant allele are affected because, lacking a second X chromosome, they do not have a normal allele.
B) Women are always asymptomatic.
C) The disorder is not transmitted from fathers to sons.
D) Each child born to a normal man and a carrier woman has a risk of 1in 4 of being affected.