The correct option is 2 and 3 only
Explanation
Nagara temple architecture, prevalent in Northern India, is primarily classified based on the style of the Shikhara (tower) or the shape of the superstructure. The three main sub-types are Latina, Phamsana, and Valabhi.
- Statement 1 is Incorrect: The Latina (or Rekha-Prasada) is the most common type of Nagara building. It is characterized by a curvilinear tower (shikhara) where the walls curve inwards to a central point at the top. It does not have a flat roof. Flat-roofed temples were early prototypes (e.g., in the early Gupta period) but are distinct from the Latina style.
- Statement 2 is Correct: Phamsana buildings are rectilinear in plan and tend to be broader and shorter than Latina buildings. Their roofs are composed of several slabs that gently rise to a single point in a straight slope (pyramidal shape), unlike the curved profile of the Latina. They are often used for mandapas (assembly halls).
- Statement 3 is Correct: Valabhi buildings are rectangular in plan with a roof that rises into a vaulted chamber. The roof is rounded, resembling a bamboo or wooden wagon-vault (barrel-vault), similar to the ancient Chaitya halls.
Key Takeaway: The Nagara style is categorized by shikhara shape: Latina (curved/linear), Phamsana (stepped/pyramidal), and Valabhi (wagon-vaulted/rectangular).