Explanation:

Karla is a well-known center of early rock-cut architecture that has piqued the interest of both scholars and laypeople. Statement 1 is correct: In Karla, the biggest rock-cut chaitya hall was excavated. The cave consists of an open courtyard with two pillars, a stone screen wall to protect from rain, a veranda, a stone-screen wall as a facade, an apsidal vaultroof chaitya hall with pillars, and a stupa at the back. Karla's chaitya hall is decorated with human and animal figures. They are heavy in their execution and move in the picture space. The cave’s interior was not fully finished but it shows how the carving progressed from time to time. Subsequently, the quadrangular flat-roofed variety became the most preferred design and is extensively found in many places. Statement 2 is correct: The caves were created as a result of the donations and support of a diverse group of people. This includes a Maharathi prince, merchants, monks, and others. Usavadata and Vasisthiputra Pulumavi's inscriptions mention a land donation to the Veluraka Samgha for this purpose.