plz help with this asap:

select one a,b,c,, or d

O ta OCHO OCH CH CH PLA is produced using the following reaction mechanism n Reactant for +H,00 COCH 1 CH CH n PLA is classified as a L The reactant that it is produced from has the structure 11 H O A. polymer CH-C-C-OH OH H O= B. monomer CH-0-0-OH OH Hooch OH C-CH-C-CH- HO -OH C. polymer HO OH -CH--CH, H-04 D. monomer HO OH HO