The real name of Imam al-Bukhari is
Musa b. Muhammad
Muhammad b. Ahmad
Isma'il b. Yaqub
Muhammad b. Isma'il
Correct answer is D
His full name was Muhammad ibn Ismail ibn Ibrahim ibn al-Mughirah ibn Bardizbah al-Bukhari. He was an scholar and teacher, he had a good knowledge about Tirmidhi.