Explain clearly why confounding prevents us from concluding that very low birth weight in itself reduces adult IQ.

A. Because confounding might indicate that if we inspected more variables, we might have discovered that in fact the IQ of very-low-birth-weight is higher than the entire population. B. Because it does not make any sense that weight at birth has anything to do with IQ at adulthood. C. Because perhaps the weight at birth does not affect the IQ at adulthood, but is itself affected by a lurking variable, which affects the IQ at adulthood as well. D. None of the above is correct