I had a breast augmentation and I've been told these scars are a reaction from my body to the dissolvable sutures? (Photo)

Iv been told these scars are a reaction from my body to the sutures which were dissolvable sutures? Why have I got these scars and are they a reaction from my body? My friend came with me to my appointment after surgery for a check up and asked why we could see the black stitches which one was measured at 7.5 cm long. These were dissolvable sutures that Iv been told my body had a reaction to which caused these scares?