18. The investigation has also determined the following relative risk estimates pertaining to eating pizza and drinking alcoholic beverages. What is your interpretation of these data? Effect of drinking without regard to eating pizza. Crude RR = 3.0 Effect of drinking among those who ate pizza. OB. Drinking is not a risk factor. RR = 3.0 OD. None of the above answers are correct. A. The effect of drinking is confounded by eating pizza. OC. Drinking is a risk factor and the RR-3.0. Effect of drinking among those who did not eat pizza. RR=3.0

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