The answer to your question would be that the pronoun that completes the elliptical clause correctly is the following one: The information about Yale will interest Cynthia more than it will interest me. That is, the correct option would be B.
This pronoun is in the objective case, which is the form of a noun or pronoun when used as an object. In this case, "me" is acting as the direct object: The pronoun "I" takes the the objective case and becomes "me".