Imagine That,of Three Species,it Is Known That Species 1 and 3

Multiple Choice

Imagine that,of three species,it is known that species 1 and 3 were separated 10 million years ago,based on geologic measurements.Genetic analysis at a neutral locus indicates that these species differ by 100 substitutions.If there are 10 substitutions separating species 1 and 2,approximately how long ago did these species diverge?

A) 0.1 million years ago
B) 1 million years ago
C) 10 million years ago
D) 100 million years ago
E) Cannot be determined based on the information provided