Barry, who has a really bad cold, coughs into his bare hand. He uses the same hand to grab the pole in the subway car to steady himself as the car goes around a tight corner. Several minutes later, Donny, who is perfectly healthy, grabs the same pole as Barry. Later that morning, Donny itches his eye with the hand that grabbed the pole. A day or two later, Donny has a really bad cold. If Donny got his cold from Barry, then you would say that the pathogen was transmitted by
A) indirect contact.B) autoinoculation.C) direct contact.D) opportunistic infection.