Identify the respiratory muscles of passive inhalation and forced exhalation:
(a) Diaphragm and internal intercostals; abdominal muscles
(b) External intercostals and diaphragm; internal intercostals and abdominal muscles
(c) Diaphragm and external intercostals; abdominal muscles
(d) Internal intercostals and abdominal muscles; diaphragm and external intercostals
