Propose a mechanism to show how 3,3-dimethyl-1-butene reacts with diluted H2SO4 to give 2,3-dimethyl-2-butanol and a small amount of 2,3-dimethyl-2-butene. Draw an energy diagram to show the progress of reaction (including reactants, transition state(s) and intermediate (if any). Then explain how the major product was determined.