Answer:
The most suitable answer is answer C.
Explanation:
First lets look at the 4 Vedas,
Each Veda has been subclassified into four major text types.
So what's the vedic period?
The period of the development of Hinduism in which they were written is sometimes referred to as the Vedic period.
Vedic period started around 1500 BC and lasted until 500 BC. The period started when the old indus valley civilization declined and new kingdoms started to emerge in the central india which were later known as "Solos maha janapada".
The four vedas were written during this period.
That means any text from that time could be "Vedic" but as a general rule the Vedic texts are the texts that only come from the four Vedas. (Which were written in the vedic period)