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How does the body react to the influenza virus?

A. It prevents further infection to other strains or the virus
B. It produces immunity to the strain of virus that invaded it
C. It becomes immune to type A, B and C viruses, but not to various strains within the types.
D. After a temporary immunity, it becomes even more susceptible to the strain that caused the influenza.
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সঠিক উত্তরঃ C. It becomes immune to type A, B and C viruses, but not to various strains within the types.
Explanation: