Correct option is A
The architecture of a stupa typically includes several key elements:
• Anda: The central hemispherical dome of the stupa, representing the mound of dirt originally placed over the relics of the Buddha.
• Medhi: The circular base or platform that supports the anda.
• Harmika: The small, square railing or enclosure at the top of the stupa, representing the heaven or the realm of the gods.
Jangha is not a part of Stupa architecture; rather, it is a term used in temple architecture, especially in Indian temples, referring to the vertical wall or body of the temple above the base (adhisthana).