The Turushka kings, mentioned by Kalhana in his book was

Hushka
Jushka
Kanishka
All of these

The correct answer is D. All of these.

Kalhana, a Kashmiri historian, wrote the Rajatarangini, a chronicle of the kings of Kashmir. In the Rajatarangini, Kalhana mentions several Turushka kings, including Hushka, Jushka, and Kanishka.

Hushka was a Turushka king who ruled Kashmir in the 2nd century CE. He was the son of Kanishka and the father of Jushka. Hushka is known for his military conquests and for his patronage of Buddhism.

Jushka was a Turushka king who ruled Kashmir in the 3rd century CE. He was the son of Hushka and the father of Kanishka II. Jushka is known for his military conquests and for his patronage of Buddhism.

Kanishka was a Turushka king who ruled Kashmir in the 1st century CE. He was the son of Hushka and the father of Jushka. Kanishka is known for his military conquests and for his patronage of Buddhism. He is also known for the Kanishka casket, a Buddhist reliquary casket that was found in Gandhara.

The Turushkas were a nomadic people from Central Asia. They invaded India in the 2nd century BCE and established the Kushan Empire. The Kushan Empire was a major power in South Asia for over 200 years.