A light wave with an electric field amplitude of E0 and a phase constant of zero is to be combined with one of the following waves: *wave A has an amplitude of E0 and a phase constant of zero *wave B has an amplitude of E0 and a phase constant of π *wave C has an amplitude of 2E0 and a phase constant of zero *wave D has an amplitude of 2E0 and a phase constant of π *wave E has an amplitude of 3E0 and a phase constant of π Which of these combinations produces the greatest intensity?