The author implies that Venetian narrative paintings with religious subjects included the representation of elaborate buildings in part because A. the ability to paint architecture in perspective was seen in Venice as proof of a painter's skill B. the subjects of such paintings were often religious stories C. large frescoes were especially conducive to representing architecture in perspective D. the architecture of Venice in the fifteenth century was more elaborate than was the architecture of Tuscany E. the paintings were imitations of a kind of historical writing that was popular in Tuscany