It's quite common for most professionals to use Photoshop on the daily. I know a few GFX artists and the majority/all of them use Photoshop for making images. I hope I helped! :)
Well, when you are using natural light you rely mainly on time exposure, so when you are shooting outdoors at night you'll have you alow more time on your shutter speed, on your aperture diameter (the smaller the more light let in) and finally on your ISO (400 is usually a good number, if you go for too high of an ISO the picture will come out grainey).
There's a lot of bands with young musicians that went on to be important
I would say B and C would be your answer
