Who is called the Frontier Gandhi ?

Who is called the Frontier Gandhi ?A. Khan Abdul Ghaffar Khan
B. Zulfiqar Bhutto
C. Manmohan Singh
D. Muhammad Ali Jinnah

Abdul Ghaffar Khan, (born 1890, Utmanzai, India—died Jan. 20, 1988, Peshawar, Pak.), the foremost 20th-century leader of the Pashtuns (Pakhtuns, or Pathans; a Muslim ethnic group of Pakistan and Afghanistan), who became a follower of Mahatma Gandhi and was called the “Frontier Gandhi.”