14. A 68 year old female with advanced Oesophageal CA, presented with poor feeding, weight loss of 15kg, poor oral intake for preceding 10days. Enteral feeding was started via feeding jejunostomy. Within 48 hours she developed restlessness and confusion with muscle weakness. Her RR was 32/MIN and HR was 120/MIN with an irregular rhythm. What is the cause for her clinical deterioration? A. Hyperglycemia B. Hypokalemia C. Hypophosphatemia D. Hypomagnesia E. Thiamine deficiency