The correct option is
B Solanaceae
Datura, commonly known as thorn apple, devil's weed is a species of poisonous plants belonging to family Solanaceae. They are herbaceous, leafy annuals and short-lived perennials. Datura is used for the medicinal purpose such as to treat bronchitis, parkinsonism etc. but it is highly poisonous.
So, the correct answer is 'Solanaceae'.