How Does the Obligate Mutualism Between Glochidion Trees and Epicephala

Multiple Choice

How does the obligate mutualism between Glochidion trees and Epicephala moths affect cospeciation events between the two genera?

A) Because Glochidion and Epicephala are highly specialized as partners in their obligate mutualism, speciation in one species makes it more likely the other species will go extinct.
B) Each species cannot survive and successfully reproduce without the other, making it more likely for cospeciation to occur when one species experiences a speciation event.
C) Although molecular evidence indicates some relationship, there is not conclusive evidence for the role of the obligate mutualism in cospeciation events in the G-E system.
D) As speciation occurs, the obligate mutualism is significantly weakened and can result in a separate, unrelated speciation in the other species.