For the crossed Claisen condensation of the following pairs of esters below.

Predict the products and specify which pair of esters is a poor choice for this kind of reaction.

Both ester pairs are a good choice for crossed Claisen condensation.

Both ester pairs are a poor choice for crossed Claisen condensation.

Esters in (i) are a poor choice for crossed Claisen condensation.

Esters in (ii) are a poor choice for crossed Claisen condensation.