In Humans,males Have Only One X Chromosome and Females Have

Multiple Choice

In humans,males have only one X chromosome and females have two,yet housekeeping X chromosome genes are expressed in roughly equal amounts in males and females.How can this be explained?

A) The X chromosome is hyperactivated in males.
B) The X chromosomes are hypoactivated in females.
C) One X chromosome in females is inactivated.
D) The Y chromosome in males actually contains similar genes as the X chromosome.