Many acid-catalyzed reactions begin with the protonation of the reactant. Draw the electron flow arrow(s) in the following reaction mechanism that shows this process. (Use electron-flow arrows to indicate the movement of electrons in the template to the left of the reaction arrow, then modify the template to the right of the reaction arrow to show the resulting product(s). Assign lone pairs, radical electrons, and atomic charges where appropriate. Do not add atoms to or remove atoms from the template.)