The “Ridda Wars”  were fought by which caliph?

A. 1st caliph 
B. 2nd caliph
C. 3rd caliph
D. None of these

The Ridda Wars or Wars of Apostasy, were a series of military campaigns launched by the Caliph Abu Bakr against rebel Arabian tribes during 632 and 633, just after the death of the Islamic Prophet Muhammad.