Given these two expressions select the BEST PLA implementation: F1( w.x.Y.z)- sum for m of left curly bracket O comma 2 comma 3 comma 7 comma 9 comma 11 comma 13 comma 15 right curly sum for m of left curly bracket O comma 2 comma 3 comma 7 comma 9 comma 11 comma 13 comma 15 right curly bracket sum for m of left curly bracket 2 comma 4 comma 8 comma space 10 comma 11 comma 13 right curly bracket space plus space sum for d of left curly bracket O comma 5 comma 9 comma 15 right curly bracket