India’s private airline indigo made and emergency landing in Karachi’s Jinnah international airport on 2 March 2021 for reason?

India’s private airline indigo made and emergency landing in Karachi’s Jinnah international airport on 2 March 2021 for reason?

A. Bird strike
B. Technical Engine Fault
C. Medical emergency 
D. Unfavourable Atmosphere

The aircraft, of India’s private airline IndiGo, was en route from Shahrjah to Lucknow when a medical emergency was reported on board.