If You Find a Mouse in Your Basement,it Is Likely

If you find a mouse in your basement,it is likely Mus musculus.Peromyscus leucopus is also common.Or,you may get lucky and find a relatively rare Peromyscus maniculatus instead.Out of these three species,which two are the most closely related (from an evolutionary standpoint) ?

A) the two most common: M.musculus and P.leucopus
B) the two species in the Peromyscus genus
C) the two with the species name that starts with "m" because species that start with the same first letter are closely related
D) There is no way to tell with the information provided in this question.