Dogs (Canis Lupus Familiaris)and Gray Wolves (Canis Lupus)can Interbreed to Produce

Dogs (Canis lupus familiaris) and gray wolves (Canis lupus) can interbreed to produce viable,fertile offspring.These species shared a common ancestor recently (in geologic time) and have a high degree of genetic similarity,although their anatomies vary widely.Judging from this evidence,which two species concepts are most likely to place dogs and wolves together into a single species?

A) ecological and phylogenetic
B) morphological and phylogenetic
C) biological and morphological
D) biological and phylogenetic