'Springing Tiger: A study of a Revolutionary' is a biography work on which person ?

'Springing Tiger: A study of a Revolutionary' is a biography work on which person ?
 a) Shyamji Krishnavarma
 b) Subhash Chandra Bose
 c) Chandra Shekhar Azad
 d) Bhagat Singh

Subhash Chandra Bose