<prompt> All the following are Causes of hypotonia in a 2 year old child exceptTrisomy 21Spinal muscular atrophyCongenital muscular dystrophyCerebral Palsy  <response>: All the above causes presents exclusively with hypotonia either central or peripheral, except cerebral palsy CP. Cerebral palsy commonly presents with hypeonia, though hypotonic CP is a known entity; its occurrence is uncommon than hypeonic CP. 