WILL MARK THE BRAINLIEST
A gardener is selecting plants for her garden. She chooses five plants that are poisonous but non-medicinal, seven plants that are medicinal and poisonous, and nine plants that are medicinal but not poisonous. What is the probability that a plant selected at random from this garden will be medicinal?
a. 3/7
b. 5/21
c.12/21
d. 16/21