The family containing mustard and its main characters are

• A

  Brassicaceae – tetramerous flowers, six stamens in tetradynamy, bicarpellary gynoecium, siliqua type fruit

• B

  Brassicaceae – pentamerous flowers, many stamens, pentacarpellary gynoecium, capsule type fruit

• C

  Solanaceae – pentamerous flowers, five stamens, bicarpellary gynoecium, berry type fruit

• D

  Poaceae – trimerous flowers, three stamens, monocarpellary gynoecium, caryopsis type of fruit.