1) Using Statement (1), We cannot find the age of Sachin in 1997.NOT SUFFICIENT
2) Using Statement (2), We cannot find the age of Sachin in 1997 ;NOT SUFFICIENT
taking 1 and 2 together Since range of prime numbers is not given, we cannot calculate the age of Sachin even using both the statement together ;NOT SUFFICIENT
Statement (1) and Statement(2) together is not sufficient.
Hence option A is correct.