Iodoacetamides, maleimides, benzyl halides, and bromomethyl ketones can all be used to modify the $\_\_\_\_\_\_\_\_\_$ group on $\_\_\_\_\_\_\_\_\_\_$ residues. A$)$ amino; basic B$)$ phenyl; Tyr and Trp C$)$ carboxyl; acidic D$)$ sulfhydryl; Cys E$)$ hydroxyl; Ser and Tyr