Passage: Yash Johar was born on 6 September 1929 in Lahore, Punjab, British India. He was married to Hiroo Johar (née Chopra), a sister of the noted filmmakers BR Chopra and Yash Chopra. They are the parents of successful Indian film director Karan Johar. Johar died on 26 June 2004 in Mumbai, aged 74, of a chest infection, though he also had been fighting cancer. After his death, his son took the reins of Dharma Productions.

Question: What is the name of Yash Johar's son?
Karan Johar