I think it’s a bc it just makes sense
Answer:
He used various chisels to shape the figure.
Explanation:
I'm not 100% sure this is true but I remember reading about his works and how most sculptors created their works. I do know sculptors (especially back then) used chisels to shape the figure's body and other areas. So I do believe the first one is the answer you are looking for.
Sorry if anything is wrong, but let me know how it goes if you didn't already answer :)
Eh... I'd have to say all of them. but if you're iffy about that answer... Chose Option choice A.