Will Tummy Tuck Get Rid of Old Horizontal Scar?

Is it possible to get rid of the old scar during Tummy tuck? it runs 5' to 6' horizontally 1/2' to1' above my bellybutton. I have since had 2 baby girls both by c-section. My question is: would it be possible to only have one scar with a tummy tuck to get rid of the old surgery scar and the loose pregnancy skin & stretchmarks and to tighten the tummy muscles backup. I've always been into fitness and it's frustrating that no matter how much I do now my tummy always looks out of place with my body. I'm not too worried about the placement of the scar or being able to hide it, as I have always had one. I'm more concerned with the pregnancy muscles, skin and stretchmarks.Thank You!