The Roots of Which Spinal Nerves Make Up the Cauda

Multiple Choice

The roots of which spinal nerves make up the cauda equina?
1) Thoracic
2) Lumbar
3) Sacral
4) Coccygeal

A) 1, 2, 3, 4
B) 2, 3, 4 only
C) 3, 4 only
D) 4 only