Match the following options correctly:

(A)- II, (B)- I, (C)- III, (D)- IV

The early stupas, exemplified by those at Sanchi and Bharhut, exhibited a simplicity in their design. These structures featured stone railings resembling bamboo or wooden fences, as well as ornately carved gateways positioned at the cardinal points. Worshipers would traditionally enter through the eastern gateway, proceeding in a clockwise manner around the mound, keeping it to their right—a ritual mimicking the path of the sun across the sky. As time advanced, the stupa's mound underwent an intricate transformation, adorned with niches and sculptures as seen at sites like Amaravati and Shah-ji-ki-Dheri in Peshawar, Pakistan.

Before the birth of Vardhamana, later known as Mahavira, in the sixth century BCE, the foundational philosophy of the Jains was already in existence within northern India.

According to these traditional accounts, the Buddha, initially named Siddhartha, hailed from the Sakya clan and was the son of a clan chief.