Which of the following best describes a difference between the nonspecific and specific immune responses? a. the nonspecific response is based only on physical barriers, while the specific response includes both physical and chemical barriers. b. the nonspecific response provides a lasting immunity from previously encountered pathogens, while the specific response does not. c. the nonspecific response provides an immediate response, while the specific response involves a delay between exposure and response. d. the nonspecific response relies on the recognition of pathogens to combat infections, while the specific response relies on inflammation.