Official Answer Key & Detailed Solution
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Correct Answer: Option (D) — Neither 1 nor 2
Concept & Option Breakdown
Standard Reference VerifiedStatement 1 is incorrect: The ELISA (Enzyme-Linked Immunosorbent Assay) test is widely used to detect antibodies and antigens, notably for viral infections like HIV, but is not the standard primary diagnostic screening tool for cancer.
Statement 2 is incorrect: Globally, the distribution of the Rhesus factor is highly skewed: around 85–94% of the population is Rh-positive (Rh+), while only a small minority is Rh-negative (Rh-).
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