Correct option is A
The term "Shruti" means "that which is heard" and refers to the most authoritative and sacred texts in Hinduism, believed to be divinely revealed to sages (rishis) through meditation and hearing.
Shruti Literature Includes:
The Vedas (Rigveda, Samaveda, Yajurveda, Atharvaveda)
Brahmanas
Aranyakas
Upanishads
These texts form the core of Vedic tradition and are considered apauruṣeya (not man-made).
Vedanga – Auxiliary sciences connected to the Vedas; part of Smriti.
Purana – Mythological and historical narratives; Smriti.
Ramayana – Epic by Valmiki; also Smriti.