Please help Why is the following product not formed in the

Please help :(

Why is the following product not formed in the aldol reaction below? A ketone enolate cannot add into a ketone. The cyclopropane ring is too strained to form. The two ketones are too far apart. NaOCH3 is not a strong enough base. Which reagents could be used to form the following ketoester? Acetone, diethyl carbonate: sodium ethoxide Acetone, diethyl carbonate, sodium methoxide Ethyl acetate, acetone, sodium ethoxide Ethyl acetate, ethyl bromide, LDA Select the structure of the major product of the following reaction sequence.

Solution

2) B

3) C

4) B