The correct answer is: A. Lalitaditya
Lalitaditya Muktapida was the founder of the Karkota dynasty, which ruled over the Kashmir region from the 8th to the 10th centuries CE. He was a powerful and successful ruler who expanded his kingdom to include much of the northwestern Indian subcontinent. He was also a patron of the arts and literature, and his reign was a time of great cultural and intellectual flourishing in Kashmir.
Durlabhavardhana was the son of Lalitaditya and succeeded him as king of Kashmir. He was a capable ruler, but his reign was relatively short. He was succeeded by his son, Avantivarman.
Kanishka was a Kushan emperor who ruled over much of Central Asia and the Indian subcontinent in the 2nd century CE. He is best known for his patronage of Buddhism and for the construction of a number of stupas and monasteries.
None of these options is the founder of the Karkota dynasty.