Which series is correctly layered from top to bottom in a tropical rain forest?

A) ground layer, shrub/immature layer, under story, canopy, emergent layer B) canopy, emergent layer, under story, shrub/immature layer, ground layer C) canopy, under story, shrub/immature layer, emergent layer, ground layer D) emergent layer, canopy, under story, shrub/immature layer, ground layer E) emergent layer, under story, canopy, ground layer, shrub/immature layer