The correct option is B Cruciferae and Solanaceae
The Solanaceae include a number of commonly cultivated species. The most economically important genus of the family is Solanum, which contains the potato (S. tuberosum). Potato tuber (modified stem) is widely used as staple food. Raphanus sativus (wild radish) belongs to Cruciferae or Brassicaceae family. It is a modified root which stores food.
Thus, the correct answer is option C.