Regarding nondepolarising muscle relaxants

• A. Jaw and eye muscles are paralysed before the limb and trunk muscles
• B. Rocuronium is the most potent nondepolarising skeletal muscle relaxant
• C. Atracurium is a steroid derivative
• D. Vecuronium blocks cardiac muscarinic receptors, thus inducing moderate increase in heart rate
• E. The nondepolarising agents produce a non-surmountable blockade