Q. Consider the following statements:1. ELISA test is employed as the first and most basic test for an individual to        detect cancer.2. Almost 50% of human beings have Rh+ blood while the remaining have Rh-      blood.Which of the statements given above is/are correct ? 

1. 1 only
2. 2 only
3. Both 1 and 2
4. Neither 1 nor 2