For numbers 10 to 13: Ratatouille wanted to determine the lethal dose for rat poison. He then observed a random sample of 350 rats equally divided among seven doses (in grams) of rat poison. The data is given below: Dose (in grams) Number of rats Number of rats killed 10 50 20 15 50 26 20 50 27 35 50 36 50 50 35 70 50 41 90 50 45 13. The estimated value of the LD50 is grams. (Only the final answer should be rounded-off) O A. 1.0826 OB. 1.1849 O C. 12.0939 O D. 15.3085

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