This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Muscle relaxants, Subject name: Anaesthesia
A 70 kg old athlete was posted for surgery, Patient was administered succinylcholine due to unavailability of vecuronium. It was administered in intermittent dosing [total 640 mgi. During recovery patient was not able to respire spontaneously & move limbs. What is the explanation- 
Select and explain. 
A. Pseudocholinesterase deficiency increasing ,action of syccinylcholine, B. Phase 2 blockade produced by succinylcholine, C. Undiagnosed muscular dystrophy and muscular weakness, D. Muscular weakness due to fasciculation produced by succinylcholine
B: Phase 2 blockade produced by succinylcholine
Answer: B: Phase 2 blockade produced by succinylcholine 
Explanation: None