1a)
Source A comes from a Guardian archieve so the tone of the source could be neutral. Source A shows me that the soldiers were beaten up by the rioters who were throwing stones towards the soldiers. As seen in the source, the soldiers were badly injured.
Source D backups source A as the source tells me that the problem is solved through violence. As mentioned in the source" ........that violence is the only way you're gonna solve things..........Btitain has done a lot for Ireland. I think they should give to(the country) to us, but I don't think it should be violence that will bring about."
Therfore, source A is realiable.