A chemist dissolves a ketone in diethyl ether and adds K-selectride, followed by the addition of dimethyl sulfate. The chemist notices that a significant amount of the enol ether is formed. By name or number, identify all of the following three changes that will disfavor the O-alkylation that forms the enol ether: 1) Switching the base to LDA 2) Changing the solvent to DMSO 3) Changing the electrophile to methyl iodide