A medicinal plant of Brassicaceae is
Lepidium sativum is a plant belonging to family Brassicaceae. It includes peppergrass, peppercress and pepperwort. Lepidium sativum is a medicinal plant used as an analgesic, anti-inflammatory, anti-asthmatic.
Sisymbrium irio, known as London rocket belonging to family Brassicaceae. It is a medicinal plant used to treat cough, chest congestion, rheumatism, to detoxify liver and spleen, and to reduce swelling and clean wounds.
Cheiranthus cheiri, known as wallflower belonging to family Brassicaceae. It is a medicinal plant used in the treatment of deafness, Wisdom teeth pain, effects of cutting.
So, the correct answer is 'All of the above'.