The correct option is B Caesalpiniaceae
Tamarind (Tamarindus indica) is a leguminous tree in the family Fabaceae and subfamily Caesalpiniaceae indigenous to tropical Africa. The genus Tamarindus is a monotypic taxon, having only a single species. The tamarind tree produces edible, pod-like fruit which are used extensively in cuisines around the world.
Cassia is a genus of flowering plants in the legume family, Fabaceae, and the subfamily Caesalpinioideae. Species are known commonly as cassias. Cassia is also the english common name of some species in the genus Thus, Cinnamomum of the family Lauraceae. Tamarindus indica and Cassia does not belongs to the family Papillionaceae and Mimosaceae
So, the correct answer is 'Caesalpiniaceae'