How many cervical, thoracic, lumbar, sacral, and coccygeal vertebrae are typically found in the human spine?
a) 5 cervical, 12 thoracic, 5 lumbar, 1 sacrum, and 1 coccyx
b) 7 cervical, 12 thoracic, 5 lumbar, 1 sacrum, and 1 coccyx
c) 7 cervical, 10 thoracic, 5 lumbar, 1 sacrum, and 1 coccyx
d) 7 cervical, 12 thoracic, 4 lumbar, 1 sacrum, and 1 coccyx