Identify the major product P in the following | vedclass

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(D) The starting material is a dianion of ethyl acetoacetate,specifically the $O,O$-dianion formed by treating ethyl acetoacetate with two equivalents

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$3$-ethoxy-pent-$3$-en-$2$-one

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(D) The starting material is a dianion of ethyl acetoacetate,specifically the $O,O$-dianion formed by treating ethyl acetoacetate with two equivalents of a strong base like $LDA$.$1$. The dianion is more nucleophilic at the $\alpha$-carbon (the carbon between the two carbonyl groups) than at the oxygen atoms.$2$. When treated with an alkyl halide like $CH_3CH_2I$,the $\alpha$-carbon attacks the ethyl group in an $S_N2$ reaction.$3$. Subsequent acidic workup $(H_3O^+)$ protonates the enolate oxygens to regenerate the keto-ester functionality.$4$. The resulting product is ethyl $2$-ethylacetoacetate,which is ethyl $2$-ethyl-$3$-oxobutanoate. Looking at the options,option $D$ represents the structure of $2$-ethyl-$3$-oxobutanoate (ethyl $2$-ethylacetoacetate).

Identify the major product $P$ in the following reaction:
$CH_2=C(OLi)-CH=C(OLi)OEt \xrightarrow[(ii) H_3O^+]{(i) CH_3CH_2I / THF} P$

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Identify the major product $P$ in the following reaction:$CH_2=C(OLi)-CH=C(OLi)OEt \xrightarrow[(ii) H_3O^+]{(i) CH_3CH_2I / THF} P$