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Assertion (A) : There is no vaccine for AIDS. 

Resson (R)   : The AIDS virus changes its genetic code 

  • A.Both A and R are true and R is the correct explanation of A.
  • B.Both A and R are true but R is NOT the correct explanation of A.
  • C.A is true but R is false.
  • D.A is false but R is true.

Answer: A

A vaccine contains the inactivated germs of the disease. But the AIDS virus changes its genetic code and so on vaccine has been invented for it.

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