Which of the following types of real property ownership will be deemed to be a tenancy in common?

A: Two brothers own equal amounts of all the common stock in a corporation, the only asset of which is real property. B: Two brothers own equal undivided interests in a piece of real property, with each brother being able to divest himself of his interest by sale, gift, or will. C: Two brothers are equal partners in a general partnership that owns a piece of real property used in the partnership business. D: Two brothers own equal fractional interests in a piece of real property and at the death of one of the brothers the survivor will own the entire piece of property.