Islamic study

Name the first Sahabi (R.A.) who was martyred?

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(a) Hazrat Haris Bin Abi Halla (RA)
(b) Hazrat Saad bin Abi Waqqas (RA)
(c) Hazrat Hamza (RA)
(d) Hazrat Usamah bin Zaid (RA)

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