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
A patient was undergoing surgical procedure under general anaethesia. Suddenly he developed tachycardia, sweating, hypeension and tachypnea. What is the best immediate step to manage the situation- 
Select and explain. 
A. IV beta-blocker, B. Abandon the surgery, C. Deepen the plane of Anaesthesia, D. Nothing is required
C: Deepen the plane of Anaesthesia
Answer: C: Deepen the plane of Anaesthesia 
Explanation: Ans: C. Deepen the plane of AnaesthesiaThe given patient is showing signs of light anaesthesia and intraoperative awareness.Signs of light anaesthesia (intra-operative awareness) are:TachycardiaHypeensionLacrimationperspiration (sweating)Eye movementPreserved reflexes (coughing)Movement on painful stimuliLaryngospasm / BronchospasmTachypneap waves on EEGIt intraoperative clinical signs suggest that a patient is having light anaesthesia intraoperative awareness, anaesthesia should be deepened immediately.