The correct option is B Nagara
North Indian temple architecture, style of architecture produced throughout northern India and as far south as Bijapur district in northern Karnataka state, characterized by its distinctive shikhara, a superstructure, tower, or spire above the garbhagriha (“womb-room”), a small sanctuary housing the main image or emblem of the temple deity. The style is sometimes referred to as Nagara, a type of temple mentioned in the Shilpa-shastras (traditional canons of architecture), but exact correlation of the Shilpa-shastra terms with extant architecture has not yet been established.The typical Hindu temple in northern India, on plan, consists of a square garbhagriha preceded by one or more adjoining pillared mandapas (porches or halls), which are connected to the sanctum by an open or closed vestibule (antarala). The entrance doorway of the sanctum is usually richly decorated with figures of river goddesses and bands of floral, figural, and geometric ornamentation. An ambulatory is sometimes provided around the sanctum. The shikhara is usually curvilinear in outline, and smaller rectilinear shikharas frequently top the mandapas as well. The whole may be raised on a terrace (jagati) with attendant shrines at the corners. If a temple is dedicated to the god Shiva, the figure of the bull Nandi, the god’s mount, invariably faces the sanctum, and, if dedicated to the god Vishnu, standards (dhvaja-stambha) may be set up in front of the temple.