This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
Which of the following nerves are affected after spinal anaesthetic block – 
Select and explain. 
A. Motor and sensory only, B. Sensory and autonomic nerve only, C. Sensory nerves only, D. Sensory, autonomic and motor nerves
D: Sensory, autonomic and motor nerves
Answer: D: Sensory, autonomic and motor nerves 
Explanation: Local anesthetics block generation and conduction of nerve impulse at all part of neuron where they come in contact, without causing structural damage. Thus not only sensory but motor impulses and autonomic control is also interrupted.