Read the following passage and solve the questions based on it.
There are seven friends—A, B, C, D, E, G and H at a B-school. They specialize in exactly one of the two areas: Marketing or Systems. The students choose their specialization in accordance with the following:
(i) If D specializes in Systems then B specializes in Marketing.
(ii) If E specializes in Systems then H and A both specialize in Marketing.
(iii) G does not choose the same specialization as D.
(iv) If C specializes in Systems, then B also specializes in Systems.
Which one of the following is a pair of friends who cannot specialize in Marketing together?