In the Diels-Alder reaction shown below, a Lewis acid-Lewis base complex forms with the dienophile. Predict what will happen to the rate of the reaction and justify your answer.

The reaction will proceed faster due to the increased energy gap between the HOMO-LUMO of the diene and dienophile.

The reaction will proceed slower due to the increased bulkiness of the dienophile.

The reaction will proceed faster due to the reduced electron repulsion between the diene and the dienophile.

The reaction will proceed slower due to the additional electrons introduced between the reactants and products.