Correct Option: B

Dawar Baksh was proclaimed as Mughal emperor by Asaf Khan on Jahangir's death to ensure Khurram's (Shahjahan"s) enthronement. Upon the death of Jahangir ,in order to secure the accession of Shahjahan, Asaf Khan, the brother of Nur Jahan, brought Dawar Baksh out of confinement, declared him king and sent him to Lahore.