A thin slab of material with index ng is between two other materials. The top material has index n₁ and the bottom has index n3. Light with wavelength much greater than the thickness of the middle layer is incident on the top layer. If n₁>n₂>n3, will reflected light from the second and third layer interfere constructively or destructively? O constructive O destructive

A thin slab of material with index ng is between two other materials. The top material has index n₁ and the bottom has index n3. Light with wavelength much greater than the thickness of the middle layer is incident on the top layer. If n₁>n₂>n3, will reflected light from the second and third layer interfere constructively or destructively? O constructive O destructive