Who among the following has won the American’s world International Boxing Federation (IBF) title?
[A]Briton Anthony Joshua
[B]Mohammed Ali Qamar
[C]Rubin Carter
[D]Sugar Ray Leonard

Briton Anthony Joshua
Anthony Joshua defeated Charles Martin in two rounds at London’s O2 Arena to claim the IBF heavyweight title in only his 16th professional fight. Joshua is also just the third man to win a pro heavyweight world title while still a reigning Olympic champion.