Fabaceae is famous as Leguminosae or bean and pea family. This single monophyletic family possess three sub-families such as Mimosoideae, Papilionoideae, Caesalpinioideae.
While the family is known by the presence of five sepals, zygomorphic flower, gamosepalous. It has imbricate aestivation. The placentation is marginal with one elongated placenta on one side of the ovary (superior). Its ovules attached at the fusion of the carpel's margins and not axile (where the ovary is divided by radial spokes with placentas in separate locules).
Therefore, the correct answer is option E.