2 Why does Sean Brady feel optimistic about the discovery of this new antibiotic? (A) because it has already been approved to treat illnesses in humans
(B) because it helped him launch his company, Lodo Therapeutics
(C) because it proved that lab studies are not necessary to develop new antibiotics
(D) because it suggests that more antibiotics are waiting to be discovered

Article : Scientists are studying new ways of finding antibiotics — in dirt