Which of the following is LEAST suggestive of infection with polio virus:

• A. Low grade fever and malaise with complete resolution in 2 to 3 days
• B. Biphasic illness with several days of fever,then meningeal symptoms and asymmetric flaccid paralysis 5 to 10 days later
• C. Descending motor paralysis with preservation of tendon reflexes and sensation
• D. Failure to isolate a virus from the cerebrospinal fluid in the presence of marked meningismus