GMAT Sentence Correction (SC) | Re: On 3 February 2010, “The walking man”, a life size bronze

Changing modifier should change the noun preceding ,

On 3 February 2010, “The walking man”, a life size bronze piece sculpted by Swiss Sculptor Alberto Giacometti was auctioned for a record $103.7 million, for the highest price ever paid for a sculpture sold at public auction, beating the record of a 5000-year old anthromorphic lioness sold for $57.2 million in 2007.

Here, There are two modifiers.
first one a life sixe bronze piece, which is talking about "The walking man"
second
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