Is a 250-275cc a smaller implant, suitable to reach a C cup? (photos)

I REALLY want to be smaller breasted after my augmentation. I don't want to be anything more than a C cup! I do however want to gain upper breast volume that was lost during my pregnancy, nursing my children, and my age. My plastic surgeon, and I decided on 250 cc moderate plus profile implants filling to desired aesthetic. Yes, I do like saline. He assured me that a 250 implant is on the smaller side. Is it? He's the expert but I may want to bug him about going even smaller. ???