This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Regional anaesthesia, Subject name: Anaesthesia
Which is not true about spinal anesthesia? 
Select and explain. 
A. Useful for lower limb surgery, B. Produces complete sensory and motor paralysis below the level, C. Autonomic fibers are effected above the sensory level, D. It produces more hemodynamic alteration than epidural anesthesia
B: Produces complete sensory and motor paralysis below the level
Answer: B: Produces complete sensory and motor paralysis below the level 
Explanation: In spinal autonomic level is 2 segments higher than sensory which is 2 segments higher than motor So sensory blockade will not only be below the autonomic level but will also extend 2 segments above the motor level.