Solve the problem.A chemistry lab uses the liquid solvents listed below. Once the chemicals have been used, they are poured into appropriate waste containers. However, certain of these chemicals cannot be mixed without causing violent reactions. The table indicates which chemical pairs are incompatible. Determine the minimum number of waste disposal containers needed to store the waste solvents safely, and give a list of the chemicals that are to be stored in each container. 
A. Container 1: acetone, acetonitrile, benzene, cyclopentane, and toluene ; Container 2: ethanol and methanol; Container 3: acetic anhydride ; Container 4: hydrogen peroxide
B. Container 1: acetone, acetonitrile, benzene, cyclopentane, and toluene ; Container 2: ethanol and methanol; Container 3: acetic anhydride and hydrogen peroxide
C. Container 1: acetone, acetonitrile, benzene, cyclopentane, ethanol, methanol, and toluene ; Container 2: acetic anhydride and hydrogen peroxide
D. Container 1: acetone, acetonitrile, benzene, cyclopentane, ethanol, methanol, and toluene ; Container 2: acetic anhydride ; Container 3: hydrogen peroxide
Answer: D
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